Abstract
This study presents a simple and powerful technique for multichannel measurements of the density profile in laboratory plasmas by microwave interferometry. This technique uses electromechanical microwave switches to temporally switch the connection between multiple receiver antennas and one phase-detection circuit. Using this method, the phase information detected at different positions is rearranged into a time series that can be acquired from a minimum number of data acquisition channels (e.g., two channels in the case of quadrature detection). Our successfully developed multichannel microwave interferometer that uses the antenna switching method was applied to measure the radial electron density profiles in a magnetized plasma experiment. The advantage of the proposed method is its compactness and scalability to multidimensional measurement systems at low cost.
| Original language | English |
|---|---|
| Article number | 023507 |
| Journal | Review of Scientific Instruments |
| Volume | 85 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2014 Feb 1 |
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All Science Journal Classification (ASJC) codes
- Instrumentation
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Multichannel microwave interferometer with an antenna switching system for electron density measurement in a laboratory plasma experiment. / Kawamori, Eiichirou; Lin, Yu Hsiang; Mase, Atsushi; Nishida, Yasushi; Cheng, C. Z.
In: Review of Scientific Instruments, Vol. 85, No. 2, 023507, 01.02.2014.Research output: Contribution to journal › Article
TY - JOUR
T1 - Multichannel microwave interferometer with an antenna switching system for electron density measurement in a laboratory plasma experiment
AU - Kawamori, Eiichirou
AU - Lin, Yu Hsiang
AU - Mase, Atsushi
AU - Nishida, Yasushi
AU - Cheng, C. Z.
PY - 2014/2/1
Y1 - 2014/2/1
N2 - This study presents a simple and powerful technique for multichannel measurements of the density profile in laboratory plasmas by microwave interferometry. This technique uses electromechanical microwave switches to temporally switch the connection between multiple receiver antennas and one phase-detection circuit. Using this method, the phase information detected at different positions is rearranged into a time series that can be acquired from a minimum number of data acquisition channels (e.g., two channels in the case of quadrature detection). Our successfully developed multichannel microwave interferometer that uses the antenna switching method was applied to measure the radial electron density profiles in a magnetized plasma experiment. The advantage of the proposed method is its compactness and scalability to multidimensional measurement systems at low cost.
AB - This study presents a simple and powerful technique for multichannel measurements of the density profile in laboratory plasmas by microwave interferometry. This technique uses electromechanical microwave switches to temporally switch the connection between multiple receiver antennas and one phase-detection circuit. Using this method, the phase information detected at different positions is rearranged into a time series that can be acquired from a minimum number of data acquisition channels (e.g., two channels in the case of quadrature detection). Our successfully developed multichannel microwave interferometer that uses the antenna switching method was applied to measure the radial electron density profiles in a magnetized plasma experiment. The advantage of the proposed method is its compactness and scalability to multidimensional measurement systems at low cost.
UR - http://www.scopus.com/inward/record.url?scp=84894501080&partnerID=8YFLogxK
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U2 - 10.1063/1.4865117
DO - 10.1063/1.4865117
M3 - Article
AN - SCOPUS:84894501080
VL - 85
JO - Review of Scientific Instruments
JF - Review of Scientific Instruments
SN - 0034-6748
IS - 2
M1 - 023507
ER -