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Proceedings Paper

On The Use Of Multiple Photon Processes In Krypton For Laser Guiding Of Electron Beams
Author(s): Leon J Radziemski; Noshir M Khambattai; John A. Oertel; Robert Silk; J M Mack; Dushan Mitrovich
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Paper Abstract

Neutral krypton atoms were excited from the ground state 4p6 1S0 to the 4p5 6p[3/2]2 state by a resonant two-photon absorption from a line- narrowed ArF excimer laser operating at 193.41 nm. A third photon, absorbed while the atom is in the excited state, ionizes it. Excited state and ion densities were theoretically computed using a stvdard,rate-equation analysis. The irradiance levels used (1-5x10 8 W/cm2) were too low for significant ground and excited state ac Stark and Rabi effects. The photon detection system was calibrated with a standard tungsten lamp. Ion signals wel3 measured with known electrical components. The resonance results were compared with predictions of non-resonant ionization based on a standard formulation. The ion and excited state densities have been used with a modified electron beam propagation code (IPROP) to model such propagation in a low pressure laser-excited krypton channel. The modifications included the effects to field ionization of the excited krypton atoms. Implications for guiding of e-beams using ArF excited krypton are discussed.

Paper Details

Date Published: 8 August 1989
PDF: 8 pages
Proc. SPIE 1060, Nonlinear Optical Beam Manipulation and High Energy Beam Propagation Through the Atmosphere, (8 August 1989); doi: 10.1117/12.951741
Show Author Affiliations
Leon J Radziemski, New Mexico State University (United States)
Noshir M Khambattai, New Mexico State University (United States)
John A. Oertel, New Mexico State University (United States)
Robert Silk, New Mexico State University (United States)
J M Mack, Los Alamos National Laboratory (United States)
Dushan Mitrovich, 3 Mulberry Loop (United States)

Published in SPIE Proceedings Vol. 1060:
Nonlinear Optical Beam Manipulation and High Energy Beam Propagation Through the Atmosphere
Robert A. Fisher; LeRoy E. Wilson, Editor(s)

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