Studies on multipole-field stabilization of FRC plasmas

Research Project

Project/Area Number	58420048
Research Category	Grant-in-Aid for General Scientific Research (A)
Allocation Type	Single-year Grants
Research Field	プラズマ理工学
Research Institution	Osaka University
Principal Investigator	ISHIMURA Tsutomu 大阪大学, 工学部, 教授 (50028932)
Project Period (FY)	1983 – 1985
Project Status	Completed (Fiscal Year 1985)
Budget Amount *help	¥15,600,000 (Direct Cost: ¥15,600,000) Fiscal Year 1984: ¥4,000,000 (Direct Cost: ¥4,000,000) Fiscal Year 1983: ¥11,600,000 (Direct Cost: ¥11,600,000)
Keywords	Plamsa / 不安定性
Research Abstract	In order to stabilize the n = 2 rotational instability which usually occurs in FRC plasmas, the application of multipole field was found to be useful. The theoretical study is mainly concentrated on the establishment of the stability criterion which gives the threshold field strength of the multipole field necessary to stabilize the FRC plasmas. On the other hand, the experiments to stabilize the FRC plasmas are done by using PIACE and OCT machines for wide range of plasma parameters and the results are compared with the theoretical prediction. The experimental threshold field strength is about one third of the theoretical one.