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Proceedings Paper

Generation of intense ultrashort x-ray pulses
Author(s): David C. Eder; Richard A. London; Mordecai D. Rosen; George L. Strobel
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Paper Abstract

Modeling of x-ray emission from targets heated by an ultrashort-pulse high-intensity optical laser is discussed. One application, using the emitted x rays, is pumping inner-shell photo- ionized x-ray lasers. Short wavelength lasing ((lambda) <EQ 15 angstrom) requires fast rise- time 1 - 3 keV x rays to ionize inner K-shell electrons. It has been shown that structured targets, consisting of grooves on a solid material or a composite of clusters, have high absorption. We model grooved targets as an ensemble of exploding foils finding that the rise time of x rays is rapid enough for pumping inner-shell x-ray lasers. We show that simple atomic models can overestimate the energy in x-ray emission bands: High-Z materials are found to have the highest conversion efficiency but mid-Z materials can be used to provide a band of emission at a particular energy. We show that the pondermotive inhibition of expansion has only a small effect on the x-ray emission.

Paper Details

Date Published: 1 February 1994
PDF: 9 pages
Proc. SPIE 2015, Applications of Laser Plasma Radiation, (1 February 1994); doi: 10.1117/12.168004
Show Author Affiliations
David C. Eder, Lawrence Livermore National Lab. (United States)
Richard A. London, Lawrence Livermore National Lab. (United States)
Mordecai D. Rosen, Lawrence Livermore National Lab. (United States)
George L. Strobel, Lawrence Livermore National Lab. (United States)

Published in SPIE Proceedings Vol. 2015:
Applications of Laser Plasma Radiation
Martin C. Richardson, Editor(s)

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