Measurement of ultrashort-pulse cross-polarization scattering in a tandem mirror

被引：0
|
作者：
Kogi, Yuichiro [1 ]
Mase, Atsushi [1 ]
Hojo, Hitoshi [1 ,2 ]
Itakura, Akiyosi [1 ,2 ]
Ichimura, Makoto [1 ,2 ]
Yatsu, Kiyoshi [1 ,2 ]
机构：
[1] Advanced Science and Technology Center for Cooperative Research, Kyushu University, Kasuga 816-8580, Japan
[2] Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
来源：
| 2001年 / Japan Society of Applied Physics卷 / 40期
关键词：
Electromagnetic wave polarization - Electromagnetic wave reflection - Electromagnetic wave scattering - Electron cyclotron resonance - Heating - Magnetic variables measurement - Plasma diagnostics - Plasma guns - Vacuum applications;
D O I：
10.1143/jjap.40.l841
中图分类号：
学科分类号：
摘要：
Cross-polarization scattering (CPS) diagnostics using ultrashort pulse microwaves is applied to the GAMMA 10 tandem mirror for the measurement of internal magnetic fluctuations. The CPS process uses the mode conversion effect of electromagnetic waves by means of magnetic fluctuations in a plasma. The mode contamination of antennas and multiple reflections from the vacuum vessel make the CPS measurement difficult since they easily mask the CPS signal. By using polarizers and performing time-of-flight measurement on the ultrashort pulse, the spurious electromagnetic waves are eliminated and the identification of the CPS process is successful.
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