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Proceedings Paper

X-ray spectroscopic analysis of the influence of low-modal nonuniformity on the formation of a hot spark
Author(s): Yoshihiro Ochi; Mitsuhiro Fukao; J. Sunahara; Hiroaki Nishimura; Kazuhisa Fujita; Tohru Kawamura; Hiroyuki Shiraga; Noriaki Miyanaga; Hiroshi Azechi; Hideaki Takabe; Kunioki Mima; Tatsuhiko Yamanaka; Sadao Nakai; Randolf Butzbach; Ingo Uschmann; Eckhart Foerster
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Paper Abstract

In the direct-drive scheme implosion of the inertial confinement fusion, the hot spark formation is critically affected by laser irradiation non-uniformities and subsequent hydrodynamic instabilities. Influence of the low- modal irradiation non-uniformities on the hot spark formation was investigated by means of the time- and space- resolved x-ray spectroscopic measurements. Experimental results were compared with post-processed hydro-code simulations by the aid of x-ray spectrum analysis code.

Paper Details

Date Published: 11 January 2000
PDF: 8 pages
Proc. SPIE 3886, High-Power Lasers in Energy Engineering, (11 January 2000); doi: 10.1117/12.375142
Show Author Affiliations
Yoshihiro Ochi, Institute of Laser Engineering/Osaka Univ. (Japan)
Mitsuhiro Fukao, Institute of Laser Engineering/Osaka Univ. (Japan)
J. Sunahara, Institute of Laser Engineering/Osaka Univ. (Japan)
Hiroaki Nishimura, Institute of Laser Engineering/Osaka Univ. (Japan)
Kazuhisa Fujita, Institute of Laser Engineering/Osaka Univ. (Japan)
Tohru Kawamura, Institute of Laser Engineering/Osaka Univ. (Japan)
Hiroyuki Shiraga, Institute of Laser Engineering/Osaka Univ. (Japan)
Noriaki Miyanaga, Institute of Laser Engineering/Osaka Univ. (Japan)
Hiroshi Azechi, Institute of Laser Engineering/Osaka Univ. (Japan)
Hideaki Takabe, Institute of Laser Engineering/Osaka Univ. (Japan)
Kunioki Mima, Institute of Laser Engineering/Osaka Univ. (Japan)
Tatsuhiko Yamanaka, Institute of Laser Engineering/Osaka Univ. (Japan)
Sadao Nakai, Faculty of Engineering/Osaka Univ. (Japan)
Randolf Butzbach, Friedrich-Schiller-Univ. Jena (Germany)
Ingo Uschmann, Friedrich-Schiller-Univ. Jena (Germany)
Eckhart Foerster, Friedrich-Schiller-Univ. Jena (Germany)


Published in SPIE Proceedings Vol. 3886:
High-Power Lasers in Energy Engineering
Kunioki Mima; Gerald L. Kulcinski; William J. Hogan, Editor(s)

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