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Proceedings Paper

Dynamics of the ultrashort laser pulse in a capillary discharge-preformed argon plasma channel
Author(s): Shohei Sakai; Jun Miyazawa; Takeshi Higashiguchi; Noboru Yugami; Nadezhda Bobrova; Pavel Sasorov
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Paper Abstract

We have observed guiding of 1016-W/cm2 ultrashort laser pulses in a discharge-produced plasma channel in an argon-gas-filled 1-cm long alumina (Al2O3) capillary. An optimum timing of the laser pulse injection was around 150 ns for the discharge with a peak current of 200 A at the discharge time 150 ns. One-dimensional magnetrohydrodynamic (MHD) code was used to evaluate the average degree of ionization of Ar in the preformed plasma channel. In the preformed plasma the averaged ion charge state of Ar3+ was obtained from the observed visible emission spectra and from the MHD simulation. The spectrum of the laser pulse in the preformed by the discharge argon plasma channel was not changed and was well reproduced in the particle-in-cell (PIC) simulation.

Paper Details

Date Published: 5 October 2011
PDF: 10 pages
Proc. SPIE 8140, X-ray Lasers and Coherent X-ray Sources: Development and Applications IX, 814012 (5 October 2011); doi: 10.1117/12.892512
Show Author Affiliations
Shohei Sakai, Utsunomiya Univ. (Japan)
Jun Miyazawa, Utsunomiya Univ. (Japan)
Takeshi Higashiguchi, Utsunomiya Univ. (Japan)
Japan Science and Technology Agency, CREST (Japan)
Noboru Yugami, Utsunomiya Univ. (Japan)
Japan Science and Technology Agency, CREST (Japan)
Nadezhda Bobrova, Institute for Theoretical and Experimental Physics (Russian Federation)
Pavel Sasorov, Institute for Theoretical and Experimental Physics (Russian Federation)


Published in SPIE Proceedings Vol. 8140:
X-ray Lasers and Coherent X-ray Sources: Development and Applications IX
James Dunn; Annie Klisnick, Editor(s)

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