학술논문
High-power laser experiment forming a supercritical collisionless shock in a magnetized uniform plasma at rest
Document Type
Working Paper
Author
Yamazaki, Ryo; Matsukiyo, S.; Morita, T.; Tanaka, S. J.; Umeda, T.; Aihara, K.; Edamoto, M.; Egashira, S.; Hatsuyama, R.; Higuchi, T.; Hihara, T.; Horie, Y.; Hoshino, M.; Ishii, A.; Ishizaka, N.; Itadani, Y.; Izumi, T.; Kambayashi, S.; Kakuchi, S.; Katsuki, N.; Kawamura, R.; Kawamura, Y.; Kisaka, S.; Kojima, T.; Konuma, A.; Kumar, R.; Minami, T.; Miyata, I.; Moritaka, T.; Murakami, Y.; Nagashima, K.; Nakagawa, Y.; Nishimoto, T.; Nishioka, Y.; Ohira, Y.; Ohnishi, N.; Ota, M.; Ozaki, N.; Sano, T.; Sakai, K.; Sei, S.; Shiota, J.; Shoji, Y.; Sugiyama, K.; Suzuki, D.; Takagi, M.; Toda, H.; Tomita, S.; Tomiya, S.; Yoneda, H.; Takezaki, T.; Tomita, K.; Kuramitsu, Y.; Sakawa, Y.
Source
Phys. Rev. E, 105, 025203 (2022)
Subject
Language
Abstract
We present a new experimental method to generate quasi-perpendicular supercritical magnetized collisionless shocks. In our experiment, ambient nitrogen (N) plasma is at rest and well-magnetized, and it has uniform mass density. The plasma is pushed by laser-driven ablation aluminum (Al) plasma. Streaked optical pyrometry and spatially resolved laser collective Thomson scattering clarify structures of plasma density and temperatures, which are compared with one-dimensional particle-in-cell simulations. It is indicated that just after the laser irradiation, the Al plasma is magnetized by a self-generated Biermann battery field, and the plasma slaps the incident N plasma. The compressed external field in the N plasma reflects N ions, leading to counter-streaming magnetized N flows. Namely we identify the edge of the reflected N ions. Such interacting plasmas form a magnetized collisionless shock.
Comment: 17 pages, 12 figures, 1 table. Physical Review E, in press
Comment: 17 pages, 12 figures, 1 table. Physical Review E, in press