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Proceedings Paper

Imaging experiments of Ne-like x-ray lasers
Author(s): Juan C. Moreno; Joseph Nilsen; Troy W. Barbee; Luiz Barroca Da Silva; Ernst E. Fill; Yuelin Li; Peixiang Lu
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Paper Abstract

We discuss high resolution two-dimensional near-field images of the neon-like nickel and germanium x-ray laser obtained using the Asterix laser at the Max-Planck-Institute and the Nova laser at Lawrence Livermore National Laboratory. Our imaging diagnostic consisted of a concave multilayer mirror that imaged the output end of the x-ray laser line onto a backside illuminated x-ray CCD detector. A 25 micrometer thick wire positioned at the end of the target provided a spatial fiducial. With the Asterix iodine laser, a prepulse 5.23 ns before the main pulse, was used to irradiate slab targets. A great deal of structure was observed in the near field images, particularly in the J equals 0 - 1 emission. We observed a large difference in the spatial dependence of the J equals 0 - 1 and J equals 2 - 1 lines of germanium, with the J equals 2 - 1 emission peaking farther away from the original target surface. A larger prepulse moved the peak emission farther away from the target surface. For the Nova experiments we used a series of 100 ps pulses spaced 400 ps apart to illuminate a germanium target. We obtained high resolution images of both the J equals 0 - 1 and J equals 2 - 1 lines of Ge. these measurements are compared to hydrodynamic simulations coupled with atomic kinetics and including refraction effects.

Paper Details

Date Published: 1 November 1997
PDF: 7 pages
Proc. SPIE 3156, Soft X-Ray Lasers and Applications II, (1 November 1997); doi: 10.1117/12.279417
Show Author Affiliations
Juan C. Moreno, Lawrence Livermore National Lab. (United States)
Joseph Nilsen, Lawrence Livermore National Lab. (United States)
Troy W. Barbee, Lawrence Livermore National Lab. (United States)
Luiz Barroca Da Silva, Lawrence Livermore National Lab. (United States)
Ernst E. Fill, Max-Planck-Institut fuer Quantenoptik (Germany)
Yuelin Li, Univ. of Maryland/College Park (United States)
Peixiang Lu, Max-Planck-Institut fuer Quantenoptik (Japan)

Published in SPIE Proceedings Vol. 3156:
Soft X-Ray Lasers and Applications II
Jorge J. G. Rocca; Luiz Barroca Da Silva, Editor(s)

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