期刊
JOURNAL OF INSTRUMENTATION
卷 12, 期 -, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1748-0221/12/10/C10003
关键词
Ion sources (positive ions, negative ions, electron cyclotron resonance (ECR); electron beam (EBIS)); Orthomode transducers; Plasma diagnostics - interferometry; spectroscopy and imaging; Polarimeters
资金
- 5th Nat. Comm. of INFN under VESPRI
A K-band (18.5 divided by 26.5 GHz) microwave interferometry/polarimetry setup, based on the Frequency-Modulated Continuous-Wave (FMCW) method, has been developed at INFN-LNS under the VESPRI project. The interferometer has been proven to provide reliable measurements of the plasma density even in the extreme unfavorable conditions lambda(p) similar or equal to L-p similar or equal to L-c, being lambda(p), L-p and L-c the probing signal wavelength, the plasma dimension and the plasma chamber length respectively. The VESPRI setup has been therefore upgraded with a rotating polarimetric system based on waveguide OMTs (OrthoModeTransducers) for the measurement of the magnetoplasma-induced Faraday rotation. An analysis method has been developed on purpose in order to discriminate the polarization plane rotation due to the plasma only, excluding the effects of the cavity resonator which represents the primary error source on phase angle measurement. Results about the first collected data, showing a significative agreement of the plasma-induced polarization plane rotation with the well-known lambda(2) law, are hereby presented. The developed method will be a powerful tool for probing plasmas in very compact magnetic traps such as Electron Cyclotron Resonance Ion Sources.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据