Bulletin of the American Physical Society
39th Annual Meeting of the APS Division of Atomic, Molecular, and Optical Physics
Volume 53, Number 7
Tuesday–Saturday, May 27–31, 2008; State College, Pennsylvania
Session A1: DAMOP Prize Session |
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Chair: William Stwalley, University of Connecticut Room: Nittany Lion Inn Ballroom A-E |
Wednesday, May 28, 2008 8:00AM - 8:10AM |
A1.00001: Welcome Remarks Dan Larson This abstract not available. [Preview Abstract] |
Wednesday, May 28, 2008 8:10AM - 8:46AM |
A1.00002: Davisson-Germer Prize in Atomic or Surface Physics: The COLTRIMS multi-particle imaging technique-new Insight into the World of Correlation Invited Speaker: The correlated many-particle dynamics in Coulombic systems, which is one of the unsolved fundamental problems in AMO-physics, can now be experimentally approached with so far unprecedented completeness and precision. The recent development of the COLTRIMS technique (COLd Target Recoil Ion Momentum Spectroscopy) provides a coincident multi-fragment imaging technique for eV and sub-eV fragment detection. In its completeness it is as powerful as the bubble chamber in high energy physics. In recent benchmark experiments quasi snapshots (duration as short as an atto-sec) of the correlated dynamics between electrons and nuclei has been made for atomic and molecular objects. This new imaging technique has opened a powerful observation window into the hidden world of many-particle dynamics. Recent multiple-ionization studies will be presented and the observation of correlated electron pairs will be discussed. [Preview Abstract] |
Wednesday, May 28, 2008 8:46AM - 9:22AM |
A1.00003: Will Allis Prize Talk: Ionization Dynamics of Atoms in Intense, Ultra-short Laser Pulses Invited Speaker: The time-dependent dynamics of atomic electrons in an intense laser pulse can be determined by solving the time-dependent Schrodinger equation. Examination of the time-dependent wave function, obtained by numerical integration of this equation, shows how energy is transferred from the photon field to the most weakly bound electron(s) of the atom. An electron, once it gains sufficient energy to overcome its attraction to the remaining ion core, finds that its subsequent movement is controlled by the oscillating electromagnetic field. The amplitude of the electron's oscillatory motion is substantially greater than the size of the atom so that there is a high probability that the freed electron will experience additional interactions with its parent ion core before it escapes completely. Thus, substantial further transfer of energy from the field to the electron can occur. This leads to the emission of surprisingly high energy photons and electrons, ultra-short light pulses and possibly to further ionization. Results of several numerical studies will be presented to illustrate these processes. [Preview Abstract] |
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