Plasma and Fusion Research
Volume 6, 2404057 (2011)
Regular Articles
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita 565-0871, Japan
- 1)
- Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita 565-0871, Japan
- 2)
- Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka 560-0043, Japan
- 3)
- Graduate School of Engineering, Tohoku University, 6-6-1 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8579, Japan
- 4)
- Department of Physics, University of York, Heslington, York, YO10 5DD, UK
- 5)
- LULI Ecole polytechnique, 91128 Palaiseau Cedex, France
- 6)
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Abstract
Collisionless shock wave generation in counter-streaming plasmas for several target materials (Al, C, Cu, and Pb) is investigated using a high-power laser system. Counter-streaming plasmas are produced by irradiating an inner surface of a double-plane target. For Al, C, and Pb, a shock wave is observed in self-emission measurements similar to the previous experiment using a CH target [Y. Kuramitsu et al., J. Phys.: Conf. Series. 24, 042008 (2010)], and the width of the transition region is much shorter than the ion-ion collision mean-free-paths. The mean-free-paths tend to be longer for heavier materials, because the ionization degrees Z are not so different among these materials.
Keywords
colissionless shock, laser plasma, laboratory astrophysics
Full Text
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This paper may be cited as follows:
Takao IDE, Youichi SAKAWA, Yasuhiro KURAMITSU, Taichi MORITA, Hiroki TANJI, Kento NISHIO, Tsunehiko KATO, Naofumi OHNISHI, Christopher D. GREGORY, Nigel WOOLSEY, Alexandra DIZIERE, Michel KOENIG, Shoujun WANG, Quanli DONG, Yutong LI and Hideaki TAKABE, Plasma Fusion Res. 6, 2404057 (2011).