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Proceedings Paper

High-speed X-ray radiographic measurement of laser-driven hydrodynamic instability
Author(s): Hiroyuki Shiraga; Hiroshi Azechi; Mitsuo Nakai; Keisuke Shigemori; Masaharu Nishikino; Tatsuhiro Sakaiya; Shinsuke Fujioka; Yohei Tamari; Tatsuhiko Yamanaka
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Paper Abstract

Hydrodynamic instability in laser-irradiated targets have been investigated in detail by using ultra high-speed x-ray radiographic technique. Recently developed high-resolution x-ray imaging for laser-driven Rayleigh-Taylor (RT) instability experiments as well as data including RT growth rate, ablation density and plasma density profile are desribed. Results are of great importance for comprehensive understanding of the dispersion relation of the laser-driven RT instability. Especially, direct observation of the ablation density was first achieved with temporal and spatial resolutions of 100 ps and 3 μm, respectively. Imaging techniques includes x-ray Moire imaging, x-ray penumbral imaging and Fresnel phase zone plate imaging coupled with x-ray streak cameras or x-ray CCD cameras. Experiments were performed by using Gekko-XII/HIPER laser system at the Institute of Laser Engineering, Osaka University.

Paper Details

Date Published: 1 August 2003
PDF: 6 pages
Proc. SPIE 4948, 25th International Congress on High-Speed Photography and Photonics, (1 August 2003); doi: 10.1117/12.516778
Show Author Affiliations
Hiroyuki Shiraga, Osaka Univ. (Japan)
Hiroshi Azechi, Osaka Univ. (Japan)
Mitsuo Nakai, Osaka Univ. (Japan)
Keisuke Shigemori, Osaka Univ. (Japan)
Masaharu Nishikino, Osaka Univ. (Japan)
Tatsuhiro Sakaiya, Osaka Univ. (Japan)
Shinsuke Fujioka, Osaka Univ. (Japan)
Yohei Tamari, Osaka Univ. (Japan)
Tatsuhiko Yamanaka, Osaka Univ. (Japan)

Published in SPIE Proceedings Vol. 4948:
25th International Congress on High-Speed Photography and Photonics
Claude Cavailler; Graham P. Haddleton; Manfred Hugenschmidt, Editor(s)

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