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LBNL Currents

October 13, 1995



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1995 Laboratory Open House Program
details inside


Table of Contents


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Experimental station a major tool for surface science studies

By Lynn Yarris

A recently completed proof-of-principle experiment at the Advanced Light Source marked the final step in commissioning what may be the world's most extensive surface science experimental station ever linked to a synchrotron radiation beamline.

Using a phenomenon known as "circular dichroism," researchers successfully characterized the surface of a sample of oxidized tungsten metal and demonstrated the potential of their beamline and experimental station for future studies of magnetic properties at surfaces and interfaces.

The successful team included Charles Fadley, a physicist with the Laboratory's Materials Sciences Division and a professor of physics at UC Davis; ALS scientist Zahid Hussain; former Lab director Dave Shirley, now a professor at Penn State University; and graduate students and postdoctoral associates from both UC Davis and UC Berkeley.

Surface science has always been a important field of study because most chemistry takes place either on the surfaces of materials, or at the interface where two surfaces meet. It will take on even greater importance in the future, however, with the coming of "nanotechnology," which makes use of devices whose dimensions are measured in billionths of a meter (nanometers).

Two of the best techniques for studying surfaces and interfaces are photoelectron spectroscopy (PES) and photoelectron diffraction (PED). PES/PED starts with a beam of photons striking the surface of a sample. Electrons in the constituent atoms absorb the incoming energy and are ejected from the sample as photoelectrons. These photoelectrons are emitted at energies that can be measured to identify each type of emitting atom and determine how many there are and what their chemical or magnetic state is (PES). Photoelectrons emitted from the inner shells of an atom also behave as outgoing waves. These waves can be scattered by nearby atoms to produce diffraction patterns that can be analyzed to locate the positions of the atoms (PED).

"Surfaces are both wonderful and terrible to study because they have to be prepared very carefully and special techniques have to be used to avoid looking at the atoms in the bulk of the material," says Fadley, one of the country's foremost practitioners of PES/PED. "Most techniques that use photons to probe solids are really bulk probes. The beauty of photoelectron spectroscopy and diffraction is that only effects that come from within the first 5 to 10 layers of atoms are measured."

Through the combination of high resolution in both energy and photoelectron emission angles (the best currently possible), Fadley and his research team can obtain detailed information on surface atoms and their positions. By treating the outgoing photoelectron wave as a reference wave and analyzing the interference patterns created with waves scattered from other atoms, it is possible to make a photoelectron hologram. With enough holographic data, true 3-D images of individual atoms can be produced. This can be done selectively for individual atoms even when bound in a surface molecule like an oxide--a major advantage for developing the next generation of nanoscale semiconductor or magnetic storage devices.

The surface science experimental station that has been set up by Fadley, Hussain, and their students is located on ALS beamline 9.3.2, a bend- magnet beamline that produces photons between 30 and 1500 electron volts in energy. It features a state- of- the- art PES/PED system, with in-situ sample preparation and characterization equipment, designed to capitalize on the high photon fluxes and variable light polarization that the ALS can deliver.

To this station, Fadley and his colleagues will soon add a scanning tunneling microscope (STM), an instrument that can be used to map the atomic topography of a surface. Linking PES/PED and STM capabilities within a single ultrahigh vacuum system will provide highly complementary information on the changes that atomic structures undergo during surface chemical reactions.

Another special feature allows the researchers to vary the polarization of their x-ray light from linear to circular. Circularly polarized light can be used to measure the degree of "circular dichroism" displayed by the material. Circular dichroism is the phenomenon whereby the amount of light a material absorbs (or the number of photoelectrons it ejects) depends upon the direction (clockwise or counterclockwise) in which the light is polarized. It is especially useful in the study of magnetic materials because it distinguishes photoelectrons on the basis of their up or down "spin" orientation.

"In a magnetically- ordered environment, photoelectrons with up and down spins may not have the same energy nor scatter with equal strength from the neighboring atoms," says Fadley. "We can use these differences to measure the kind of magnetism in the vicinity of each type of atom in a sample, even for the non- magnetic ones that may have magnetic atoms nearby."

To test these capabilities, the team, working with visitor Hiroshi Daimon of The Photon Factory in Japan, carried out the first circular dichroism measurements to be performed at the ALS. Using a sample of tungsten over which was grown a thin oxide film, they showed that strong circular dichroism effects arise even in the non- magnetic tungsten atoms which are present in both the oxide and metal surfaces. This demonstrated that circular dichroism in PED can be used to study non- magnetic as well as magnetic materials.

"It was no small feat to put together all the components we needed to make this study work, and to have all these components perform so well," Fadley says. "I don't think it would have been possible anywhere but at the ALS."

CAPTION -- Chuck Fadley (left) and Zahid Hussain have built a world-class experiment station at ALS beamline 9.3.2 for studying material surfaces at an atomic level. Photo by Steve Adams

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DC Office holds its own runaround

On Sept. 22, an energetic group of Laboratory employees who are working in the Lab's Washington, D.C., office braved wind, rain, and a stormy political climate for a run on the Mall in the Nation's Capital. This was the first LBNL-DC Runaround, held the same day as its Berkeley counterpart. Participant Frank Johnson, a senior research associate in the Energy and Environment's Energy Analysis Program, provided a first hand account:

"At a length of approximately 2.8 miles, the course was almost one mile longer than the Berkeley Runaround course, proving that the D.C. staff really goes the extra mile! Some participants even delivered their opinion of proposed budget cuts right on the Capitol steps for all to hear (OK, actually the only people there were one or two security guards.) After the run, the soggy but high-spirited crew ventured into the city for nourishment and good conversation. All-in-all, it was quite an accomplishment--for once, we were able to give Congress ... the runaround!"

The Washington office began in 1993 as a project office of the Energy and Environment Division. Its scope was recently broadened to include Lab-wide representation with the addition of a newly hired office head David Dragnich. Accompanying this change was a move to a larger suite in the same building, located at 1250 Maryland Ave. SW, Suite 500, Washington, D.C.--three blocks from DOE Headquarters in the Forrestal Building

CAPTION -- A Monumental Finish: Members of the Lab's D.C. office, and staff visiting from Berkeley, after completing the first annual LBNL-DC Runaround on Sept. 22. Participants include: (back row) Keil Ritterpusch, Chris Payne, Jeff Harris, Brad Gustafson, Bill Carroll, Rich Brown; (front row) Jon Koomey, Antonio Del Monico, Frank Johnson, Sarah Bretz.

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Energy Awareness Month --

"Energy Stars" not yet shining

Contributed by Antonia Reaves

Do you have "stars" in your office just waiting to show off?

In the past year, many "Energy Star" computers and monitors have been purchased for use at the Lab. These new components are capable of saving 50 to 75 percent of their energy by powering down, or going into a "sleep" mode, when not used after a specified time delay. Yet an analysis by researchers in the Energy and Environment Division shows that only a small number have had their power management features enabled.

The Environmental Protection Agency`s objective for their Energy Star program was to encourage manufacturers to develop "sleep" features for computers and monitors utilizing the same technology developed for laptops. These "sleep" features power down the units to a maximum 30 watts each. Printers and other devices may also be Energy Star compliant. Manufacturers meeting the criteria may use the Energy Star logo to promote their products. The Lab has purchased Energy Star compliant components where feasible.

Unfortunately, even though a number of manufacturers now make Energy Star compliant computers and monitors, the energy savings may not be realized, in part, because Energy Star units are generally shipped without their power management features enabled. Also, enabling procedures vary among manufacturers, and can be difficult and time-consuming.

Some computers use a screen saver program to power down the monitor after a specified time delay. Others require the user to alter the "setup" program to enable the power-down features. Finding this information may be difficult. If a manufacturer has not used the Energy Star logo, a user may not be aware of the system`s power management capabilities. For these reasons, says Mary Ann Piette, an E&E researcher who is measuring PCs and monitors at the Lab, "Energy Star computers and monitors are saving far less than they could." The EPA hopes to remedy the situation by pressuring the manufacturers to enable the features prior to shipping.

So what are the potential energy and cost savings of the Lab's 300 or so Energy Stars? Assuming they are always left on, an estimate would be 125,000 kilowatt hours, or $7,500 annually. The lion's share of these savings would come from having monitors in their "sleep" mode, as monitors generally use one-half to two-thirds of the total power of a computer system. Eventually, most computers and monitors at the Lab will probably be replaced by Energy Stars, which will increase the savings.

If you are using a relatively new computer and are not sure if it is an Energy Star, or you have one but have not enabled its power management features, please contact the Macintosh and PC support group at X6858 for information and assistance.

A complete listing of Energy Star products can be found on the world wide web at http://www.epa.gov/docs/energy_star/. n

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N e w s W i r e

UCB ASTRONOMERS FIND BLACK HOLE IN MILKY WAY: Using the Keck Telescope, the world's largest optical and infrared telescope, UC Berkeley astronomers led by Alex Filippenko have observed what they are certain is a second black hole in the Milky Way. The suspected black hole is between five and 15 times more massive than the sun and is located some 14,000 light years from Earth in the constellation Vulpecula (the Fox). Called GS 2000+25, the black hole is the invisible partner in a binary star system that was first detected as an x-ray nova in 1988. The superior light-gathering power of the Keck's 10-meter mirror (which was designed here at the Lab) allowed Filippenko and his group to measure the velocity of the binary system's visible companion star (in excess of one million miles per hour) and calculate the mass of the invisible companion. This confirmed that the unseen object is a black hole. The announcement will appear in the December issue of Astrophysical Journal Letters. AMERICANS DOMINATE SCIENCE NOBELS: Six out of the eight researchers who shared the 1995 Nobel Prizes in science and medicine this year were Americans, including two from UC Irvine. Martin Perl of Stanford and Frederick Reines of UC Irvine won award in physics for their respective discoveries of the tau lepton and the neutrino. Perl became Stanford's eighth Nobel laureate in physics. Americans Mario Molina of MIT and Frank Rowland of UC Irvine shared the award in chemistry with Paul Crutzen, a Dutch scientist working at the Max Planck Institute in Germany, for their studies on the destruction of the ozone layer. The 1995 Nobel Prize in medicine went to Edward B. Lewis of the California Institute of Technology and Eric F. Wieschaus of Princeton, and Christiane Nusslein-Volkhard of the Max Planck Institute. They won their prize for their discovery of how genes control the early structural development of the body and how this relates to birth defects. The winners in each category will share the $1 million award. SEABORG GIVES, RECEIVES AWARDS Laboratory Director-at-Large Glenn Seaborg presented the first annual Glenn T. Seaborg Award to former Cal football player Rod Franz during the UC Berkeley--San Jose State football game on Sept. 23. Franz, a lineman on the 1947, '48, and '49 teams, was All-American three years running. Seaborg, who was chancellor of the Berkeley campus from 1958 to 1961, has the most winning athletic record of any UCB chancellor. On Oct. 1, Seaborg was on the receiving end of an award from the California Science Teachers Association, which bestowed the honor, at its statewide conference, for a "lifetime of meritorious service to California science education." Seaborg, longtime faculty member of the UC Berkeley campus, is presently chairman of the Lawrence Hall of Science, which is devoted to science education. PULP NON-FICTION: A video entitled "The Basics of the Pulp and Paper Business," a three-hour condensation of a two-day course presented at Argonne National Laboratory, is now available for loan to Laboratory employees. The video features lectures by Ronald J. Slinn, past vice-president of the American Paper Institute, and is aimed at researchers involved or interested in the "Industries of the Future" program sponsored by DOE's Office of Industrial Technology. The pulp and paper industry is one of seven industries targeted by DOE for research funding opportunities. The tape can be obtained from Don Lucas (X7002, fax: X7303, or [email protected]). ====================

1995 Laboratory Open House


Lab preparing for big event

Employees throughout the Lab are busy preparing for the big event of the year-- the 1995 Laboratory Open House. So far, at least 300 volunteers have jumped in to help with everything from advance publicity to readying labs for visitors, preparing displays, planning tours and entertainment, and much more. In addition, a large number of employees will be here the day of the event to carry out a host of activities designed to show off the Lab and the variety and quality of work conducted here. To all of those who are helping out, thank you! To those of you who are not yet involved, it's not too late to volunteer. Contact Susan Torrano at X6734.

10 a.m. - 3 p.m. Saturday Oct. 28

The following is a partial selection of the many activities awaiting employees, their families, and community visitors to the Laboratory Open House on Saturday, Oct. 28. Complete details, along with times and locations of the many exciting events scheduled for the day, will be provided in the 12-page color program, which you can pick up at the Open House. The program also contains historical background about the Laboratory, an activities map, and hints for making the most of your time, whether it be a long or short visit.

Throughout the course of the day, there will be a variety of activities for children and adults of all ages, from lectures, demonstrations and tours, to videos, special presentations and musical entertainment. There will be plenty of food (at nominal cost), free transportation around the Hill, and a number of souvenir items for sale. In fact, Open House T-shirts, in adult and children's sizes, are already available at the Employees Buying Service table in the cafeteria lobby (10 a.m. - 1:30 p.m., Monday-Friday). Tell all your friends and relatives, and plan to have a great time at the first annual Laboratory Open House!

CAPTION -- Banners (here, on Oxford Street) and posters announcing the big event are going up all over town.

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Main Events and Activities
(see actual program for times & locations)

Welcome Tent and Central Exhibits General information, food, entertainment, and an overview of Laboratory activities. Surfing the Net Or is it crawling the Web? Come see what all the fuss is about and take a turn at the keyboard. Environmental Research Laboratories (Bldg. 70) Doors will be open to the labs of scientists working toward clean-burning engines and cleaner air and water. Nuclear Science Multimedia Center (Bldg. 70A) A room full of computers will encourage you to explore the world of nuclear physics. Main Auditorium Special presentations by six of the Laboratory's leading lights. Family Science Tent Activities for kids, ages 6-12. Building 50 Complex A smorgasbord of possibilities.
  • Take in lectures on dinosaur extinctions, earthquakes, and more.
  • Take control of a computer joy stick to explore an oil field.
  • Dissect a "virtual frog," using the World Wide Web.
  • See how high-school students have explored the cosmos (and even discovered a supernova) with Hands-on Universe.
  • Take an illustrated tour of the universe's fundamental particles and forces.
    •  The Historic Bevatron Take a look at the "atom smasher" where three Nobel prizes were won. Video Presentations (Bldg. 2) Showtime! Videos on some of the things we do. Heavy-Ion Fusion and Superconducting Magnets Take a self-guided tour of our fusion research facility--the only one of its kind in the world. Then, see how researchers test superconducting magnets designed for the particle accelerators of tomorrow. Lighting Laboratory Compact fluorescents have their roots here, as do ultrabright sulfur lamps. Advanced Light Source Explore the Laboratory's largest user facility, a cornerstone of our research program. 88-Inch Cyclotron Tour the world's most productive user facility for low-energy nuclear physics. Seismic Imaging Van One of the most sensitive methods for visualizing subterranean features is to generate tiny earthquake-like signals, then "listen" as they travel through the earth. Protecting Our Environment--Modeling Fracture Flow Subsurface pollutants often spread by following the path of least resistance, namely fractures in rocks. A visit to the lab studying this phenomenon will also take you through a part of the decommissioned Bevatron. Medical Imaging and Heart Disease Research One of the earliest spin-offs of "big-machine physics" in Berkeley was the use of radioactive tracers in medical research and treatment. This tradition continues with research on Alzheimer's disease, Parkinson's disease, depression, and cholesterol. Firehouse Get your hands on a fire truck! A traditional favorite with the kids. Also at the firehouse is our Emergency Operations Center. National Center for Electron Microscopy Sit down at the controls of the nation's most powerful microscope. Science Discovery Theater Shows for kids of all ages, presented by the Lawrence Hall of Science. Advanced Materials Research Labs In Bldg. 62, see how we use lasers to study materials used in computer hard disks, microprocessors, and LEDs. In Bldg. 66, visit a lab where fast, sensitive biological sensors have been developed to signal the presence of specific viruses or bacteria with a simple color change. Genome Research Labs Explore the many facets of genetics research, from DNA to robotics to digital microscopy. Advanced Engineering Technology I Tour shops and assembly areas equipped for everything from welding to high-tech detector testing. Advanced Engineering Technology II The doors will be open to areas devoted to every aspect of electronics fabrication, from printed circuit design to final assembly. Windows Research Lab Better windows are a crucial key to energy efficiency. Look in on our active research in this area; during the Open House, we'll use our thermal imager to produce "thermograms" of our visitors. ALS Engineering Research Here's a chance to look at some of the test facilities and magnet development labs where research continues to "push the envelope."

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    Special Events

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    Featured Speakers (Bldg. 50 Auditorium)

    10:30 a.m.
    Jay N. Marx--"Re-creating the Early Universe in the Laboratory"

    11:15 a.m.
    Mina J. Bissell--"Shedding New Light on the Fight Against Breast Cancer"

    Noon
    Peter G. Schultz--"From Drugs to Materials: A Library Approach"

    1:30 p.m.
    Glenn T. Seaborg--"From FDR to Bush: Fifty Years Advising the Presidents"

    2:15 p.m.
    Eric B. Norman--"Neutrino Astronomy: Studying the Stars from a Mile Underground"

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    Lectures & Presentations

    Mass Extinctions, Asteroid Impacts, and Earthquakes (Bldg. 50, Conf. Room A)

    11 a.m.

    1:30 p.m.

    High-Energy Physics and Energy-Efficiency Research (Bldg. 50, Conf. Room B)

    10:30 a.m.

    1:30 p.m. ====================

    Videos (Bldg. 2)

    "The Bevatron" -- A look back at one of science's most productive machines.

    "The Search for Heavy Elements" -- Not by accident does the periodic table include berkelium, californium, and now seaborgium.

    "The Lab in the News"-- Clips from televised news reports of breakthroughs on the Hill.

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    Nobel Laureates

    Nine Nobel prize winners did their science at the Berkeley Lab--five in physics and four in chemistry--more than any other laboratory in history. At the Open House, nine roads at the Laboratory will be dedicated in honor of the Nobelists. The Nobelists are:

    1939 -- Ernest O. Lawrence
    1951 -- Glenn T. Seaborg and Edwin M. McMillan
    1959 -- Owen Chamberlain and Emilio G. Segre
    1960 -- Donald A. Glaser
    1961 -- Melvin Calvin
    1968 -- Luis W. Alvarez
    1986 -- Yuan T. Lee

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    Kids' Activities

    The Family Science Tent
    (Bldg. 50 parking lot)

    Step right up to The Family Science Tent and see how everyday household items can be used to illustrate basic scientific concepts. The Family Science Tent will be open all day for school-age children and their parents. Learn about the Science of Bubbles, how to make Water Drop Mazes, and how to build Marble Raceways. Talk with local high school student participants in the Student Research Program. Learn about their experiences as members of research teams and see demonstrations of their projects.

  • An Electron's Excellent Adventure

    Become an electron! Create a photon! See secrets exposed by the special photon light you produce! Follow the path an electron takes as it is accelerated, bunched, bumped, and bent around the synchrotron at the Advanced Light Source.

  • Science Passport

    Get your Open House Passport at the Welcome Tent. This Passport will guide you to activities designed for school-age students. For each activity, you will receive a stamp in your Passport. Take it home as a reminder of the day's science explorations.

  • Science Wanderers

    You'll know them when you see them. These roving ambassadors in colorful lab coats are college students working for a semester with scientists at the Laboratory. When you see a Science Wanderer, let him or her pose science questions that will stimulate your imagination. You may even win a prize!

    Science Discovery Theater
    (Bldg. 66 Auditorium)

  • 10:20 a.m.

    Quakes and Shakes -- It's a quake! What should you do? Interactive demonstrations show students what to expect in an earthquake, how to react, and how their families can prepare for "The Big One."

  • 12:15 p.m.

    Be A Brainiac Dude -- Brain teasers and brain-building exercises pepper this fast-paced neural anatomy lesson. High school students will especially relish the chance to "stretch their dendrites" and come up with hilarious ways to place our science improvisers in unexpected situations. It's never too late to develop your brain!

  • 2 p.m.

    Flames, Flares, and Explosions -- The science of fire is introduced in this exciting and safe program. Live demonstrations illustrate the concept of combustion, how people first learned about fire, the requirements of burning, magicians tricks for controlling fire, what makes an efficient fuel, and fire prevention. Hold onto your hats; you won't forget this assembly.

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    Calendar of Events for October 16-27

    Calendar items may be sent via e-mail
    to [email protected], Fax to X6641,
    or Lab mail to Bldg. 65B. The deadline is
    10:30 a.m. Tuesday.

    16 m o n d a y

    EH&S CLASS

    Lockout/Tagout (257), 9-11 a.m., Bldg. 51-201; Pre-registration is required, X6612.

    CHEMICAL ENGINEERING COLLOQUIUM

    "Catalytic and Electrocatalytic Properties of Early Transition Metal Nitrides" will be presented by Levi Thompson of the University of Michigan at 4 p.m. in the Pitzer Auditorium; Refreshments, 3:30 p.m.

    DEPARTMENT OF NUCLEAR ENGINEERING COLLOQUIUM

    "Risk Analysis with the Relative Risk Profile Approach" will be presented by Edwin D. Jones of LLNL at 4 p.m. in 3106 Etcheverry; Refreshments, 3:45 p.m.

    PHYSICS DEPARTMENT COLLOQUIUM

    "High Energy Density Physics in the Laboratory with Lasers" will be presented by Michael Campbell of LLNL at 4:30 p.m. in 1 Le Conte; Refreshments, 4 p.m., 375 Le Conte.

    17 t u e s d a y

    DATABASE TRAINING

    SPIN (Physics and Astronomy database) at 11 a.m. in Bldg. 50-134.

    LESBIAN, GAY AND BISEXUAL ASSOCIATION MEETING

    General meeting at noon, Bldg. 90-2063

    THE CENTER FOR PARTICLE ASTROPHYSICS SEMINAR

    "Magnetic Fields in Clusters of Galaxies" will be presented by Olega Goldschmidt of Penn State University at 12:30 p.m. in 375 Le Conte.

    INTRODUCTION TO CURRENT
    RESEARCH SEMINAR

    "Coronal Gas in the Galactic Halo: New Far Ultraviolet Observations with `ORFEUS'" will be presented by Mark Hurwitz of UCB at 3:30 p.m. in 643 Campbell Hall.

    18 w e d n e s d a y

    EH&S CLASS

    Crane Recertification (216), 8-11 a.m., Bldg. 70A-3377; Pre-registration is required, X6612.

    BODYWORKS

    General meeting at noon in the lower cafeteria.

    TOASTMASTERS' MEETING

    12:10-1 p.m., Bldg. 2-300.

    GREEN TEAM

    Herb Garden Planting, 12:30 p.m. in front of the cafeteria.

    ENERGY & RESOURCES GROUP COLLOQUIUM

    "Tragedy and Innovation: Social Movements' Influence on Adoption of Environmental Technology in Indonesia's Pulp and Paper Industry" will be presented by David Sonnonfeld of UCSC at 4 p.m. in 2 Le Conte; Refreshments, 3:30 p.m., 310 Barrows Hall.

    19 t h u r s d a y

    EH&S CLASS

    Basic Elect. Hazard Awareness (260), 9-11 a.m., Bldg. 51-201; Pre-registration is required, X6612.

    SURFACE SCIENCE AND CATALYSIS SCIENCE SEMINARS

    "Spectroscopic and Electrochemical Studies of Ionic and Molecular

    Adsorption at Metal Electrodes" will be presented by Jacek Lipkowski of the University of Guelph at 1:30 p.m. in the Bldg. 66 Auditorium.

    DATABASE TRAINING

    SPIN (Physics and Astronomy database) at 3 p.m. in Bldg. 62-339.

    DEPARTMENT OF ASTRONOMY COLLOQUIUM

    Julianne Dalcanton of the Carnegie Observatory will speak at 3:30 p.m. in 1 Le Conte Hall, title to be announced; Refreshments, 3 p.m., 661 Campbell Hall.

    PHYSICS DIVISION RESEARCH PROGRESS MEETING

    "Goals & Plans for the Next Linear Collider" will be presented by David Burke of SLAC at 4 p.m. in Bldg. 50A-5132; Refreshments, 3:40 p.m.

    20 f r i d a y

    EH&S CLASSES

    Introduction to EHS (10), 9-11:30 a.m., Bldg. 51-201.

    Laser Safety (280), 1-3:30 p.m., Bldg. 51-201; Pre-registration is required, X6612.

    SURFACE SCIENCE AND CATALYSIS SCIENCE SEMINAR

    "Three-Dimensional Image Reconstruction of Local Adsorption

    Geometries by Holographic Diffuse LEED" will be presented by Harald Wedler of the University of Erlangen at 3 p.m. in the Bldg. 66 Auditorium.

    23 m o n d a y

    CHEMICAL ENGINEERING COLLOQUIUM

    "Reaction Pathways and Their Impact on System Performance" will be presented by Richard Pollard of the University of Houston at 4 p.m. in the Pitzer Auditorium; Refreshments, 3:30 p.m.

    DEPARTMENT OF NUCLEAR ENGINEERING COLLOQUIUM

    "Dislocation Models of Plasticity and Fracture, with Applications to Low-Activation Fusion Structures" will be presented by Nasr M. Ghoniem of UCLA at 4 p.m. in 3106 Etcheverry; Refreshments, 3:45 p.m.

    PHYSICS DEPARTMENT COLLOQUIUM

    "Quantum Mechanics in Your Face" will be presented by Sidney Coleman of Harvard University at 4:30 p.m. in 1 Le Conte; Refreshments, 4 p.m., 375 Le Conte.

    24 t u e s d a y

    EH&S CLASS

    First Aid (116), 8 a.m.-noon, Bldg. 48-109; Pre-registration is required, X6612.

    SURFACE SCIENCE AND CATALYSIS SCIENCE SEMINARS

    "Collision Induced Desorption of Adsorbates: H2O and NO on Ru(0001)" will be presented by Micha Asscher of the Hebrew University of Jerusalem at 1:30 p.m. in the Bldg. 66 Auditorium.

    INTRODUCTION TO CURRENT
    RESEARCH SEMINAR

    "Star Formations" will be presented by Frank Shu of UCB at 3:30 p.m. in 643 Campbell Hall.

    25 w e d n e s d a y

    ENERGY & RESOURCES GROUP COLLOQUIUM

    "Who Benefits from American Indian Natural Resources?" will be presented by Marjane Ambler, freelance writer, at 4 p.m. in 2 Le Conte; Refreshments, 3:30 p.m., 310 Barrows Hall.

    PHYSICS DIVISION RESEARCH PROGRESS MEETING

    "A Measurement of |Vcb| from B-o > D* + l- n-" will be presented by Ian Scott of the University of Wisconsin at 4 p.m. in Bldg. 50A-5132; Refreshments, 3:40 p.m.

    26 t h u r s d a y

    SURFACE SCIENCE AND CATALYSIS SCIENCE SEMINARS

    "Structure and Reactivity of Overlayers via Valence Bond Photoelectron Spectroscopy and Diffraction" will be presented by Kamil Klier of the Lehigh University at 1:30 p.m. in the Bldg. 66 Auditorium.

    DATABASE TRAINING

    METADEX (Metals Abstracts on CD-ROM) at 3 p.m. in Bldg. 62-339.

    DEPARTMENT OF ASTRONOMY COLLOQUIUM

    Ellen Zweibel of the University of Colorado will speak at 3:30 p.m. in 1 Le Conte Hall, title to be announced; Refreshments, 3 p.m., 661 Campbell Hall.

    PHYSICS DIVISION RESEARCH PROGRESS MEETING

    "Charmed Meson Decay Physics: Some Results from Fermilab Experiment E791" will be presented by Michael D. Sokoloff of the University of Cincinnati at 4 p.m. in Bldg. 50A-5132; Refreshments, 3:40 p.m.

    27 f r i d a y

    BIOMECHANICAL ENGINEERING SEMINAR

    "Structural Evolution of Medical Grade UHMWPE Due to Sterilization and Environmental Aging: The Implications for Total Joint Replacements" will be presented by Lisa Pruitt of UCB at 1 p.m. in 3110 Etcheverry Hall; Refreshments.

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    Currents ONLINE edition

    The full text of each edition of Currents is published on the Lab's home page on the World Wide Web. View it at http://www.lbl.gov/ under "Research News and Publications." To set up your computer to access the World Wide Web, call the Mac and PC Support Group at X6858.

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    Dining Center Oct. 16-20

    monday 
    Early Bird
   1 pancake, 2 eggs, 2 bacon & coffee                  $2.95
Today's soup
   Three bean*                                  $1.35 & $1.95
Bistro fare
   Roast beef au jus, whipped garlic potatoes
   & green beans                                        $3.95
Passports
   South of the border                             a la carte
Sadie's Grill
   Polish sausage, sauerkraut, French roll & fries      $3.60
    tuesday 
    Early Bird
   Corned beef hash & eggs w/coffee                      2.75
Soup
   Beef vegetable & rice                        $1.35 & $1.95
Bistro fare
   Spaghetti bolognese w/yellow squash, 
   tomatoes & oregano*                                  $3.95
Passports
   Mexican fiesta salad                                  3.95
Sadie's Grill
   Grilled chicken breast w/pesto, jack & fries         $3.95
    wednesday 
    Early Bird
   Ham, cheese & mushroom omelet, toast & coffee        $2.95
Soup
   Green split pea & carrots                    $1.35 & $1.95
Bistro fare
   Chicken breast saute w/corn salsa, carrots, zucchini
   & rice pilaf*                                        $3.95
Passports
   South of the border                             a la carte
Sadie's Grill
   Bacon, cheese & tomato on sourdough w/fries          $3.40
    thursday 
    Early Bird
   Blueberry pancakes w/coffee                          $2.05
Soup
   Manhattan clam chowder                       $1.35 & $1.95
Bistro fare
   Turkey & wild rice salad w/herb vinaigrette*        $3.95
Passports
   South of the border                             a la carte
Sadie's Grill
   Roast beef & cheddar w/fries                         $3.95
    friday 
    Early Bird
   Ham scramble w/coffee                                $2.60
Soup
   Chicken gumbo                                $1.35 & $1.95
Bistro fare
   Pasta Piatti w/breadstick*                           $3.95
Passports
   Pasta Piatti w/breadstick*                           $3.95
Sadie's Grill
   Provolone burger & mushrooms w/fries                 $3.60
_______________________________________
    *Denotes recipe lower in fat, calories & cholesterol.

    ====================

    Lab to host DOE pollution prevention workshop

    The Laboratory will host nearly 150 representatives from Department of Energy facilities this month in the DOE Defense Programs' Eighth Biannual Technology Workshop, Oct. 23-26. The workshop will offer training and hands-on sessions for DOE employees involved in a wide range of pollution prevention and waste minimization activities.

    Sessions will include guidance in areas of total cost assessment, life cycle analysis, benchmarking, the National Environmental Policy Act (NEPA), and the incorporation of pollution prevention into design of new product processes and facilities.

    Although most of the activities will take place at the Berkeley Marina Marriott, one day of conference activities will consist of "break-out" groups meeting at the Laboratory. The sessions will cover such topics as chemical exchange; procurement; waste handling; and heating, ventilation and air conditioning.

    "The workshop is actually designed for the people involved hands-on in all aspects of waste management, rather than being management focused," says EH&S waste minimization specialist Shelley Worsham.

    Lab employees interested in participating in the workshop should contact Worsham (X6123) for registration and general information. Employees involved in any of the following areas of waste minimization and pollution prevention are encouraged to participate:

    Pre-registration is required for the workshop. Check-in will take place on the evening of October 23 with sessions beginning the following morning.

    ====================

    Report Coordination
    has new fax number

    The Report Coordination fax number has been changed and the old number is no longer in service, although people are continuing to try to use it. The new number is X6363. Please make a note of the new number.

    ====================

    F l e a M a r k e t

    Flea Market ads may be sent via e-mail to [email protected], Fax to X6641, or Lab mail to Bldg. 65B. The deadline is 5 p.m. Friday.

    AUTOS/SUPPLIES

    '49 FORD 2-dr coupe, 71K orig. mi., runs well, straight body, in covered storage last 20 yrs., needs new tires & cosmetics, all orig. records, $2850. Suzanne, 524-1953 (after 6 p.m.)

    '72 PORSCHE 914 1.7 Targa, needs cosmetics, gd tires, rare factory Mahle Mags, gd runner, $1650. Suzanne, 524-1953 (after 6 p.m.)

    '80 CADILLAC Seville, 350 cu. in. engine, low mi., leather, Michelins, wire wheels, 2-tone, $3200. Suzanne, 524-1953 (after 6 p.m.)

    '81 VOLVO 244 DL sedan, 4-dr burgundy, 5-spd, a/c, big car, 211K mi., very reliable, asking $1650/b.o. Mari, 299-0226

    '85 HONDA Accord hatchbk, 96K mi., 5-spd, asking $3300. Peter, X5983, 687-1827

    '86 TOYOTA Tercel, 5-spd, a/c, AM/FM cass., 170K mi., runs well, leaving USA, $1800. Rob, X4213, 652-3621

    '87 VW Cabriolet, 5-spd, exc. cond., $4995. Tom, 547-5445

    '90 HONDA Civic, 4-dr, a/t, a/c, p/s, p/w, AM-FM cass., new tires, great cond., 57K mi., $5500/b.o. Lu, X5300, 524-2650

    '91 FORD Esc. wgn, red, 1 owner, 81K mi., loaded, exc. cond., luggage rack, $5500. X7785, (707) 553-8530

    '92 JEEP Cherokee Limited, immac. cond., met. charcoal gray w/gray leather, 4WD, many options, p/w, p/l, prem. sound, tint, $17,900. Wayne, X7685, 837-2409

    CAR/VANPOOL

    CARPOOL, rider/driver commuting from Castro Valley area, 7 a.m. - 3:30 p.m. Monte, X6761

    WANTED

    GOLF CLUBS, used, complete set, cavity back style, no custom graphite shafts. Aaron, X5322

    GRE BOOKS, used or new w/practice exams. Barbara, X4274

    TICKETS

    RICHARD GOODE piano recital, Zellerbach, 10/22, 3 p.m., 2 exc. seats, $28 ea. Oscar, 848-5678

    MISCELLANEOUS

    CHIPPER/SHREDDER, Sears elec., 12 amp, branch up to 2 1/2 " dia., $250; Black & Decker elec. drill, 3/8" dbl insulated variable speed, $25; Wilson iron club set (2-PW), $275; Wilson sandwedge, $30; Spalding T.P.M.2 putter, $25; golf bags, $15, $35 & $45. Nobu, X4585

    COMPACT DISC STEREO System, miniature, AIWA, w/remote, dbl cass. deck & receiver, incl. 3-band equalizer, super t-bass, 3-way bass reflex speaker system & add'l features, 5 yr. warranty, brand new, asking $300/b.o. 635-8224 (msg.)

    COMPUTER, 386, 3M mem., 45M HD, 2 FD, VGA, $250/b.o.; fax machine, Murata M1850, like new, $200/b.o. Wang, X4793, 792-0140 (after 7 p.m.)

    DAYBED w/trundle, hardly used, pd. $370, asking $200. Peter, X5982, 687-1827

    NOTEBOOK COMPUTER, Gateway 2000 Colorbook, 33MHz 486SX, 8MB RAM, 180MB HD, carrying case, $1K; Microsoft PS2/serial mouse, $50. Anthony, X5471

    OUTBOARD MOTOR, Evinrude, 9-1/2 hp, sport twins w/6 gal. tank, $550. Al, X7660

    PRINTER, EPSON Diconix portable for PC, incl. power supply, cables & ink cartridges, best offer. Evan, X6784

    SAILBOARDS, '94 Mike's Lab 8'-10" Race, exc. cond, $695; '93 Fanatic Mega Ray 282, 9'-3", exc. cond., w/blade fin, $295. X6797, 236-4347

    TV, 27" Sony, 12 yrs. old, not remote/cable ready, best offer. Derek, X6683, 486-0524 (eve.)

    TV, 20", Mitsubishi, black, superb stereo sound, flat square screen, A/V-in/out, exc. cond., $200. Spiros, X6349

    WINDSURFING SAIL, '93 Wind Wing Race Pro, 6.8 sq. m., perfect, $195, X6797, 236-4347

    HOUSING

    ALBANY, 2 lg. studio apts, on Garfield b/t San Pablo & Kains, nr BART & El Cerrito Plaza, $525 & $575/mo. (415) 775-3889

    ALBANY, 2 bdrms in lg. 3-bdrm, 2-bth apt., quiet area, parking, nr UC Village, avail. 11/1, $270/mo., last mo. rent & $100 dep. for ea. rm. Mark, X4427, 527-7806

    BERKELEY, Euclid/Cedar Ave., 5 blks from UCB, furn. rm in pvt home, kitchen privs., washer/dryer, deck, bay view, nr trans., shops, tennis cts. & Rose Garden, no smoking, no pets, $450/mo. + util. 548-1287

    BERKELEY HILLS, furn. rm in 4-bdrm house, 5 blks from UCB, nr LBNL shuttle & BART, 3 professional adults (2 visiting scholars), no smoking, no pets, $450/mo. + util. 548-1287

    LAFAYETTE, 2-bdrm, 1-bth upper unit in secluded, woodsy duplex, balcony, washer & dryer nearby, new paint/carpet, $885. Helmut, 284-2092, 299-0565

    OAKLAND, 2-bdrm, 1-bth house, w/bonus rm, yd, well-maint., nr shopping, no garage, suitable for 2 people. 654-8334 (after 6 p.m.)

    OAKLAND HILLS, nr Claremont Hotel, new, 1-bdrm in-law apt, balcony, 3-bridge view, hardwd flrs, 1-car garage, use of washer/dryer, for 1 person, non-smoker, no pets, bicycle to Lab, $795/mo. incl. utils. + sec. dep. 841-6285

    WANTED: furn. studio/1-bdrm for visiting couple, nr trans., 10/28 - 11/25. Birgit, X4977, 848-0244

    WANTED: furn. apt nr LBNL for visiting scholar & family, 9/95 - 1/96. Rupert, X5680

    REAL ESTATE

    EL SOBRANTE, spacious 3-bdrm, 2-bth ranch-home, XL kitchen, formal DR/LR, garage w/shop, RV parking, pvt. drive & courtyard in quiet rural area, $199,950. Karl X6129, Sharron, 232-1462

    VACATION

    NO. TAHOE, 3-bdrm, 2-1/2 bth home, greenbelt views, shopping, lake, Northstar & casinos within 10 min. Wayne, X7685, 837-2409

    SO. LAKE TAHOE, 4-bdrm cabin, exc. loc., 2 mi. from Heavenly Valley, AEK, washer/dryer. Bill Holley, X4822, 283-3094

    LOST/FOUND

    FOUND: prescription safety glasses in Bldg. 77, all-metal frame. X5904.

    FOUND: wristwatch, Seiko quartz, outside Bldg. 2, about 3 wks ago. X4067.

    LOST: package containing Mac software (SmartAlarms), between Bldgs. 90 & 66 a few weeks ago. Joyce, X5940, or return to 90-3026.