ウエダ　ヨシオ   Ueda Yoshio   上田　良夫    所属   追手門学院大学  理工学部 電気電子工学科    職種   教授
言語種別	英語
発行・発表の年月	2016/08
形態種別	論文
査読	査読あり
標題	Simulations of Tungsten Re-deposition Using a Particle-In-Cell Code with Non-uniform Super Particle Sizes
執筆形態	共著・編著（代表編著を除く）
掲載誌名	CONTRIBUTIONS TO PLASMA PHYSICS
掲載区分	国外
出版社・発行元	WILEY-V C H VERLAG GMBH
巻・号・頁	56(6-8),pp.705-710
国際共著	国際共著
著者・共著者	K. Ibano,S. Togo,T. L. Lang,Y. Ogawa,H. T. Lee,Y. Ueda,T. Takizuka
概要	Tungsten (W), a promising candidate as divertor plasma facing material in magnetic fusion devices, is anticipated to promptly redeposit when sputtered or evaporated from surface due to its small ionization energy and long gyro radius. Using an artificial factor for the reaction cross sections, effects of ionization lengths to the re-deposition rate was studied by a newly developed particle-in-cell code. Treating numbers of particles in a super particle, electric charge, and mass as particle variables in the code, a special scheme for ionization and recombination was developed and used for the calculation. Simulations on W test particles with imaginary properties (neglecting the electric force) revealed the effects of ejection angles. Simulations with secondary electrons from surface showed that the sheath potential is weakened and the re-deposition rate becomes small.
DOI	10.1002/ctpp.201610040
ISSN	0863-1042/1521-3986