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Electron density measurements of a field-reversed configuration plasma using a novel compact ultrastable second-harmonic interferometer

  Articoli su Riviste JCR/ISI  (anno 2009)

Autori:  Brandi F., Giammanco F., Harris W.S., Roche T., Trask E., Wessel F

Affiliazione Autori:  Department of Physics, University of Pisa, Largo B. Pontecorvo 3, 56127 Pisa, Italy; Department of Physics and Astronomy, University of California, Irvine, CA 92697, United States; Nanobiotechnology Facility, Italian Institute of Technology, Via Morego 30, 16163 Genova, Italy

Riassunto:  A compact high-sensitivity second-harmonic interferometer for line-integrated electron density measurements on a large plasma machine is presented. The device is based on a fiber coupled near-infrared continuous-wave Nd:YAG laser and is remotely controlled. The performances of the instrument are tested on the Irvine field-reversed configuration machine, and a sensitivity of few 10(14) cm(-2) in measuring line integrated electron density is demonstrated with a time resolution of a few microseconds. The interferometer is self calibrated, has an impressive stability, and it does not require any further alignment after proper installation. These features make this device a real turn-key system suitable for electron density measurement in large plasma machines.

Rivista/Giornale:  REVIEW OF SCIENTIFIC INSTRUMENTS
Volume n.:  80 (11)      Pagine da: 113501-1  a: 113501-4
DOI: 10.1063/1.3258199

*Impact Factor della Rivista: (2009) 1.521
data tratti da "WEB OF SCIENCE" (marchio registrato di Thomson Reuters) ed aggiornati a:  19/05/2019

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