PRODUCTION OF AN INTENSE, WELL-COLLIMATED SUBMILLIMETER-WAVE BEAM ANDITS APPLICATION TO PLASMA SCATTERING MEASUREMENTS

Authors
OGAWA I IDEHARA T SAKAI A YOSHIDA K TSUCHIDA T KAWAHATA K EJIRI A IGUCHI H TANAKA K MATSUOKA K AKIYAMA R OSAKABE M OKAMURA S MINAMI T TAKAHASHI C KASPAREK W
Citation
I. Ogawa et al., PRODUCTION OF AN INTENSE, WELL-COLLIMATED SUBMILLIMETER-WAVE BEAM ANDITS APPLICATION TO PLASMA SCATTERING MEASUREMENTS, International journal of infrared and millimeter waves, 19(5), 1998, pp. 727-736
Citations number
13
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied",Optics
Journal title
International journal of infrared and millimeter waves → ACNP
ISSN journal
01959271
Volume
19
Issue
5
Year of publication
1998
Pages
727 - 736
Database
ISI
SICI code
0195-9271(1998)19:5<727:POAIWS>2.0.ZU;2-J
Abstract
Intense submillimeter wavelength radiation (f=354 GHz, P=110 W) from G yrotron FU II is converted into a well-collimated, linearly-polarized beam by a quasi-optical transmission line consisting of a quasi-optica l antenna and several mirrors. The observed focusing of the beam agree s with calculations based on the Huygens equation. We have used this i ntense beam to study low frequency density fluctuations by plasma scat tering in Compact Helical System (CHS) plasmas at the National Institu te for Fusion Science.