SPATIAL-DISTRIBUTION OF IMPURITIES AND H-NEUTRALS IN ELMO BUMPY TORUS (EBT)

被引：11

作者：

LAZAR, NH ^{[1
]}

CARPENTER, KH ^{[1
]}

TYSON, JM ^{[1
]}

WARDEN, ES ^{[1
]}

MOOS, HW ^{[1
]}

机构：

[1] JOHNS HOPKINS UNIV,DEPT PHYS,BALTIMORE,MD 21218

来源：

NUCLEAR FUSION | 1979年 / 19卷 / 05期

关键词：

D O I：

10.1088/0029-5515/19/5/002

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Absolute-brightness measurements and spatial scans in the vacuum ultraviolet have been used to investigate the presence and spatial density distribution of various charge states of carbon and aluminium (the major impurities) and neutral hydrogen in the ELMO Bumpy Torus. The impurity concentrations are quite low; the total fractional carbon concentration in the toroidal core (compared to the electron density) is less than 6 × 10−5. Sources for the C and Al impurities are examined. Experimental evidence and arguments based on the space potential and drift surfaces which are presented indicate that the surface blanket plasma plays a role analogous to a divertor, shielding the core plasma from impurities. © 1979 IOP Publishing Ltd.

引用

页码：571 / 582

页数：12