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Proceedings Paper

Recent x-ray laser experiments on the COMET facility
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Paper Abstract

The development of the transient collisional excitation x-ray laser scheme using tabletop laser systems with multiple pulse capability has progressed rapidly in the last three years. The high small-signal gain and strong x-ray output have been demonstrated for laser drive energies of typically less than 10 J. We report recent x-ray laser experiments on the Lawrence Livermore National Laboratory (LLNL) Compact Multipulse Terawatt (COMET) tabletop facility using this technique. In particular, the saturated output from the Ni-like Pd ion 4d - 4p x-ray laser at 146.8 angstrom has been well characterized and has potential towards a useable x-ray source in a number of applications. One important application of a short wavelength x-ray laser beam with picosecond pulse duration is the study of a high density laser-produced plasma. We report the implementation of a Mach-Zehnder type interferometer using diffraction grating optics as beam splitters designed for the Ni-like Pd laser and show results from probing a 600 ps heated plasma. In addition, gas puff targets are investigated as an x-ray laser gain medium and we report results of strong lasing on the n equals 3 - 3 transitions of Ne-like Ar.

Paper Details

Date Published: 12 December 2001
PDF: 13 pages
Proc. SPIE 4505, Soft X-Ray Lasers and Applications IV, (12 December 2001); doi: 10.1117/12.450575
Show Author Affiliations
James Dunn, Lawrence Livermore National Lab. (United States)
Raymond F. Smith, Lawrence Livermore National Lab. (United States)
Joseph Nilsen, Lawrence Livermore National Lab. (United States)
Jim R. Hunter, Lawrence Livermore National Lab. (United States)
Troy W. Barbee, Lawrence Livermore National Lab. (United States)
Vyacheslav N. Shlyaptsev, Univ. of California/Davis and Lawrence Livermore National Lab. (United States)
Jorge Filevich Chamatropulos, Colorado State Univ. (Argentina)
Jorge J. G. Rocca, Colorado State Univ. (United States)
Mario C. Marconi, Univ. de Buenos Aires (Argentina)
Henryk Fiedorowicz, Military Univ. of Technology (Poland)
Andrzej Bartnik, Military Univ. of Technology (Poland)


Published in SPIE Proceedings Vol. 4505:
Soft X-Ray Lasers and Applications IV
Ernst E. Fill; Jorge J. G. Rocca, Editor(s)

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