Interpretation of the Dx emission from the high field side of Alcator C-Mod

被引:9
作者
Boswell, CJ [1 ]
Terry, JL [1 ]
LaBombard, B [1 ]
Lipschultz, B [1 ]
Pitcher, CS [1 ]
机构
[1] MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA
关键词
D O I
10.1088/0741-3335/46/8/006
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
Measurements from an inner wall mounted scanning Langmuir probe and modelling of D-alpha emission show a sharp fall-off of plasma density in the inboard private flux region. D-alpha emission is modelled using a one-dimensional space, two-dimensional velocity kinetic neutral code in order to track the changes in the density profile while the magnetic topology is changed from single to double null. A sharp density decay is observed to track with the location of the secondary separatrix. The data presented are consistent with a lower level of cross-field transport on field lines in the private flux region restricted to the high field side when compared to cross-field transport on field lines in the low field side scrape-off layer.
引用
收藏
页码:1247 / 1257
页数:11
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