Detailed comparison of plasma turbulence correlation length measurements using microwave reflectometry and a Langmuir probe array

被引:27
作者
Gilmore, M [1 ]
Peebles, WA
Nguyen, XV
机构
[1] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
[2] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA
关键词
D O I
10.1088/0741-3335/42/1/101
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
Detailed comparisons of reflectometer and Langmuir probe measurements of turbulent radial correlation lengths in the Large Plasma Device (LAPD) at UCLA are presented. The LAPD is a magnetized linear plasma device where detailed measurements of electrostatic turbulence with probe arrays are possible. Furthermore, density profiles are well known and experiments have been conducted over a large number of repeatable discharges, resulting in low levels of measurement and statistical error. It has been found that homodyne reflectometer and probe correlation length measurements are in good agreement, to within 10-15%, over a wide range of density gradient scale lengths and relative fluctuation levels.
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页码:L1 / L7
页数:7
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