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    The Electronic Aladdin Newsletter No. 7 July/August 96


    1) SRC Researcher Earns Gaede-Langmuir Award

    Long time SRC user Gerald J. Lapeyre has been awarded the 1996 Gaede-Langmuir Award by the American Vacuum Society "for his outstanding contributions to the development of photoemission spectroscopy with synchrotron radiation". Lapeyre is noted in particular for his role in the development of using photon tunability and angle resolution.

    Starting out in a one room log cabin elementary school in Wyoming, Lapeyre continued his education at Notre Dame and the University of Missouri where he received his doctorate in 1962. Lapeyre then joined the physics department faculty at Montana State University. He and his colleagues at Montana State used the Synchrotron Radiation Center to develop methods which first used the radiation's continuum and polarization properties in energy resolved photoemission. Using his invention of constant final-energy

    spectroscopy (CFS) and constant initial-energy spectroscopy (CIS) he discovered the participator and spectator electron emission energies in the GaAs resonance photoemission at the Ga3d to empty-surface-state exciton threshold. Recently, the group was the first to experimentally demonstrate that photon-energy-scanned photoelectron diffraction gives holographic images for absorbates on silicon surfaces.

    2) What will happen to the Users Meeting?

    With the number of meetings and conferences increasing, and the travel budgets decreasing, it has been more and more difficult for users to make room in their schedules for the SRC Users Meeting. Also, the users community has become so multi disciplinary that the overlap between each others' research has shrunk and generated less interest in talks given at the Users Meeting. After a survey on the SRC Web page and consulting the Users Advisory Committee, it was decided to try a different approach this year. The fall Users Meeting will be replaced by two major events:

    a) There will be a topical workshop at the SRC in fall which addresses recent developments in a particular area of interest to our users. For this fall, the chosen topic will be Magnetic Circular Dichroism (MCD) and Magnetic Nanostructures. The date of the workshop is Saturday, Nov. 16, just after the conference on Magnetism and Magnetic Materials (contact Bill O'Brien ( or Franz Himpsel ( for detailed information). Possible topics for workshops in future years are angle-resolved photoemission at undulators, infrared spectroscopy and microscopy, synchrotron radiation in astronomy … Let Franz Himpsel know about your suggestions.

    b) The general users meeting agenda will be moved to a gathering at the site of the APS March Meeting, on the Sunday evening before the event. The coming March Meeting takes place in Kansas City on March 17-21, 1997, which places the coming general Users Meeting on Sunday March 16, 1997. The single largest fraction of SRC users is present at that meeting, and the Saturday night air fares bring many of us to the meeting a day early. In this Users Meeting, an update on the new developments at SRC will be given, and the Aladdin Lamp Award will be given out at an evening dinner. The Users Advisory Committee will also meet on Sunday.

    We will also try to represent SRC at other major meetings of our users, e.g. the Canadian Chemical Society Meeting in Windsor next spring. If this experiment is successful we will continue in this fashion. Otherwise, we can come back to the traditional form or alternate between the March Meeting location and SRC every other year.

    We are considering student tutorials similar to the successful sessions at last year's Users Meeting and would like to obtain input on topics and the number of potential attendees. Contact Hartmut Hochst ( for more information.

    3) MCD Update

    The magnetic circular dichroism (MCD) setup that has been available to users now has the added capability of liquid nitrogen cooling.

    4) Synchrotron Radiation Brings Couple Together

    SRC evening operator, Tom Baraniak, and user, Prof. Trish Ferrett of Carleton College, will be married on Thursday August 22, 1996. The two met during the summer of 1994 while Trish was conducting experiments at SRC, and have decided to make the quantum last a lifetime. Best wishes from all of us here at SRC.