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Proceedings Paper

Elucidating the collimation of laboratory plasma jets using soft x-ray interferometry
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Paper Abstract

The mechanisms responsible for an increase in collimation of laboratory plasma jets with higher atomic number was studied using soft x-ray laser interferometry and 2D model simulations. Dense plasma jets (Ne~ 1020 cm-3) were produced by irradiating V-shaped grooves of different materials (C, Al, and Cu) with 120 ps Ti:Sa laser pulses at peak intensities of 1 x 1012 W cm-2. High contrast soft x-ray interferograms of these plasmas were generated by combining a Mach-Zehnder interferometer that uses diffraction gratings as beam-splitters and a 46.9 nm table-top capillary discharge laser probe. A significant increase in jet collimation was observed for the higher Z materials. Simulations performed with the radiation hydrodynamic code HYDRA attribute differences in jet collimation to an increased radiation cooling of the higher Z jets.

Paper Details

Date Published: 28 September 2009
PDF: 8 pages
Proc. SPIE 7451, Soft X-Ray Lasers and Applications VIII, 74510L (28 September 2009); doi: 10.1117/12.826283
Show Author Affiliations
M. A. Purvis, NSF Engineering Research Ctr. for Extreme Ultraviolet Science and Technology, Colorado State Univ. (United States)
J. Grava, NSF Engineering Research Ctr. for Extreme Ultraviolet Science and Technology, Colorado State Univ. (United States)
J. Filevich, NSF Engineering Research Ctr. for Extreme Ultraviolet Science and Technology, Colorado State Univ. (United States)
D. P. Ryan, NSF Engineering Research Ctr. for Extreme Ultraviolet Science and Technology, Colorado State Univ. (United States)
Colorado State Univ. (United States)
S. J. Moon, Lawrence Livermore National Lab. (United States)
J. Dunn, Lawrence Livermore National Lab. (United States)
V. N. Shlyaptsev, NSF Engineering Research Ctr. for Extreme Ultraviolet Science and Technology, Colorado State Univ. (United States)
J. J. Rocca, NSF Engineering Research Ctr. for Extreme Ultraviolet Science and Technology, Colorado State Univ. (United States)
Colorado State Univ. (United States)


Published in SPIE Proceedings Vol. 7451:
Soft X-Ray Lasers and Applications VIII
James Dunn; Gregory J. Tallents, Editor(s)

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