适用于大型螺旋装置切向观测几何结构的快离子电荷交换光谱学。

Fast ion charge exchange spectroscopy adapted for tangential viewing geometry in LHD.

作者信息

Ito T, Osakabe M, Ida K, Yoshinuma M, Kobayashi M, Goto M, Murakami S, Isobe M, Kobayashi S, Toi K, Ogawa K, Takeiri Y, Okamura S

机构信息

National Institute for Fusion Science, Toki 509-5292, Japan.

出版信息

Rev Sci Instrum. 2010 Oct;81(10):10D327. doi: 10.1063/1.3502331.

DOI:10.1063/1.3502331

PMID:21033849

Abstract

A tangential Fast Ion Charge eXchange Spectroscopy is newly applied on a Large Helical Device (LHD) for co/countercirculating fast ions, which are produced by high energy tangential negative-ion based neutral beam injection. With this new observation geometry, both the tangential-neutral beam (NB) and a low-energy radial-NB based on positive ions can be utilized as probe beams of the measurement. We have successfully observed Doppler-shifted H-alpha lights due to the charge exchange process between the probing NB and circulating hydrogen ions of around 100 keV in LHD plasmas.

摘要

一种切向快离子电荷交换光谱技术新近应用于大型螺旋装置（LHD），用于测量由基于高能切向负离子的中性束注入产生的共/反向循环快离子。利用这种新的观测几何结构，切向中性束（NB）和基于正离子的低能径向NB都可以用作测量的探测束。我们已经成功观测到由于探测NB与LHD等离子体中约100keV的循环氢离子之间的电荷交换过程而产生的多普勒频移H-α光。