Abstract
A millimeter-wave phase-imaging interferometer has been developed for the study of density profiles of the GAMMA 10 tandem mirror. The interferometer uses a 70-GHz klystron oscillator and a quasi-optical transmission system. The probe beam is expanded so as to fill an orthogonal view of a plasma cross section. The view is imaged onto a detector array. The detector array consists of beam-lead GaAs Schottky barrier diodes bonded to antennas fabricated using photolithographic techniques on a fused-quartz substrate. Two types of antennas, bow-tie and Yagi-Uda antennas have been used in order to provide an effective matching to millimeter-wave beams, and compared for the performance of an imaging system. The interferometers have been applied to the central-cell and plug-cell plasmas of GAMMA 10.
Original language | English |
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Pages (from-to) | 2857-2861 |
Number of pages | 5 |
Journal | Review of Scientific Instruments |
Volume | 62 |
Issue number | 12 |
DOIs | |
Publication status | Published - 1991 |
Externally published | Yes |
ASJC Scopus subject areas
- Instrumentation