Thomson scattering measurement of a shock in laser-produced counter-streaming plasmas

Journal Article · Sun Sep 15 00:00:00 EDT 2013 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4821967· OSTI ID:22220582

Morita, T.; Kuramitsu, Y.; Moritaka, T. ^[1]; Sakawa, Y.; Takabe, H. ^[1]; Tomita, K.; Nakayama, K.; Inoue, K.; Uchino, K. ^[2]; Ide, T.; Tsubouchi, K. ^[3]; Nishio, K.; Ide, H.; Kuwada, M. ^[4]

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1. Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871 (Japan)
2. Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1, Kasugakoen, Kasuga, Fukuoka 816-8580 (Japan)
3. Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871 (Japan)
4. Graduate School of Science, Osaka University, 1-1 Machikane-yama, Toyonaka, Osaka 560-0043 (Japan)

We report the first direct measurement of temporally and spatially resolved plasma temperatures at a shock as well as its spatial structure and propagation in laser-produced counter-streaming plasmas. Two shocks are formed in counter-streaming collisionless plasmas early in time, and they propagate opposite directions. This indicates the existence of counter-streaming collisionless flows to keep exciting the shocks, even though the collisional effects increase later in time. The shock images are observed with optical diagnostics, and the upstream and downstream plasma parameters of one of the shocks are measured using Thomson scattering technique.

• OSTI ID: 22220582
• Journal Information: Physics of Plasmas, Vol. 20, Issue 9; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COLLISIONLESS PLASMA
ELECTRON TEMPERATURE
IMAGES
ION TEMPERATURE
LASERS
PLASMA DIAGNOSTICS
PLASMA PRODUCTION
SHOCK WAVES
THOMSON SCATTERING