Measurement of lower hybrid waves in scrape off layer using microwave scattering technique in Alcator C-Mod

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The direct measurement of lower hybrid (LH) waves in plasma can provide information on the propagation and absorption of LH waves in tokamak plasma and validate numerical simulations. Here, we propose to utilize the scattering of probe waves (60 GHz) off LH waves (4.6 GHz) to diagnose LH waves in the scrape off layer. We develop an analytic model to describe the scattering process in weakly inhomogeneous plasma based on the three-wave coupling problem. We then present first experimental results obtained by upgrading an ordinary-mode reflectometer system in Alcator C-Mod.

Original languageEnglish (US)
Title of host publicationRadio Frequency Power in Plasmas - Proceedings of the 19th Topical Conference
Pages235-238
Number of pages4
DOIs
StatePublished - 2011
Event19th Topical Conference on Radio Frequency Power in Plasmas - Newport, RI, United States
Duration: Jun 1 2011Jul 3 2011

Publication series

NameAIP Conference Proceedings
Volume1406
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference19th Topical Conference on Radio Frequency Power in Plasmas
Country/TerritoryUnited States
CityNewport, RI
Period6/1/117/3/11

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

Keywords

  • Lower hybrid
  • mode coupling
  • reflectometer
  • scattering
  • scrape off layer

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