タナカ　シュウタ   TANAKA Shuta   田中　周太    所属   青山学院大学  理工学部 物理科学科    職種   助教
言語種別	英語
発行・発表の年月	2022/11
形態種別	学術雑誌
査読	査読あり
標題	Detection of current-sheet and bipolar ion flows in a self-generated antiparallel magnetic field of laser-produced plasmas for magnetic reconnection research.
執筆形態	共同
掲載誌名	Physical review. E
掲載区分	国外
巻・号・頁	106(5-2),pp.055207
著者・共著者	T Morita, T Kojima, S Matsuo, S Matsukiyo, S Isayama, R Yamazaki, S J Tanaka, K Aihara, Y Sato, J Shiota, Y Pan, K Tomita, T Takezaki, Y Kuramitsu, K Sakai, S Egashira, H Ishihara, O Kuramoto, Y Matsumoto, K Maeda, Y Sakawa
概要	Magnetic reconnection in laser-produced magnetized plasma is investigated by using optical diagnostics. The magnetic field is generated via the Biermann battery effect, and the inversely directed magnetic field lines interact with each other. It is shown by self-emission measurement that two colliding plasmas stagnate on a midplane, forming two planar dense regions, and that they interact later in time. Laser Thomson scattering spectra are distorted in the direction of the self-generated magnetic field, indicating asymmetric ion velocity distribution and plasma acceleration. In addition, the spectra perpendicular to the magnetic field show different peak intensity, suggesting an electron current formation. These results are interpreted as magnetic field dissipation, reconnection, and outflow acceleration. Two-directional laser Thomson scattering is, as discussed here, a powerful tool for the investigation of microphysics in the reconnection region.
DOI	10.1103/PhysRevE.106.055207
ISSN	2470-0053
PMID	36559487