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Proceedings Paper

Demonstration designs for optical-field-ionized plasma x-ray lasers
Author(s): Peter A. Amendt; David C. Eder; Richard A. London; Bernie M. Penetrante; Mordecai D. Rosen
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Paper Abstract

We propose a demonstration experiment of optical-field-ionized plasma x-ray lasing at 247 angstroms in Nitrogen which can tolerate strong refractive defocussing. The relatively low ionization potential energy of approximately equals 98 eV in Nitrogen should result in correspondingly low residual electron temperature Te which, in turn, allows large gain at lower values of electron density. The use of low electron density provides less collisional heating as well as reduced refractive defocussing. In addition to using low electron density to mitigate refraction, we also propose the use of a wide UV laser-driver focus to give reduced transverse intensity gradients near the laser axis. Milder transverse intensity gradients lead to longer refraction lengths which effectively define the volume of x-ray lasing. These two techniques for avoiding excessive refraction are used in tandem to identify an experimental regime where x-ray lasing dominates spontaneous noise by an unambiguous margin associated with a gain-length product of five.

Paper Details

Date Published: 8 July 1993
PDF: 12 pages
Proc. SPIE 1860, Short-Pulse High-Intensity Lasers and Applications II, (8 July 1993); doi: 10.1117/12.147572
Show Author Affiliations
Peter A. Amendt, Lawrence Livermore National Lab. (United States)
David C. Eder, Lawrence Livermore National Lab. (United States)
Richard A. London, Lawrence Livermore National Lab. (United States)
Bernie M. Penetrante, Lawrence Livermore National Lab. (United States)
Mordecai D. Rosen, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 1860:
Short-Pulse High-Intensity Lasers and Applications II
Hector A. Baldis, Editor(s)

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