ECRH of overdense plasmas in TJ-K

A. Köhn, H. Höhnle, E. Holzhauer, W. Kasparek, M. Ramisch, U. Stroth

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

In the torsatron TJ-K, low-temperature plasmas are created by means of microwaves at 2.45 GHz and 8.25 GHz. The plasmas are characterized as overdense which means that densities higher than the cut-off density are achieved. Studies in a wide parameter space show that the power deposition occurs predominantly at the upper-hybrid resonance. This can be seen in the electron-energy distribution function and the measured wave electric field. Full wave simulations support these measurements. An array antenna is presented which allows to scan the angle of incidence by variation of the microwave frequency.

Original languageEnglish
Title of host publicationPlasma 2007 - Proceedings Intl. Conf. on Research and Applications of Plasmas
Subtitle of host publication4th German-Polish Conference on Plasma Diagnostics for Fusion and Applications
Pages43-46
Number of pages4
DOIs
StatePublished - 2008
Externally publishedYes
EventInternational Conference PLASMA 2007 on Research and Applications of Plasmas: 4th German-Polish Conference on Plasma Diagnostics for Fusion and Applications - 6th French-Polish Seminar on Thermal Plasma in Space and Laboratory - Greifswald, Germany
Duration: 16 Oct 200719 Oct 2007

Publication series

NameAIP Conference Proceedings
Volume993
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceInternational Conference PLASMA 2007 on Research and Applications of Plasmas: 4th German-Polish Conference on Plasma Diagnostics for Fusion and Applications - 6th French-Polish Seminar on Thermal Plasma in Space and Laboratory
Country/TerritoryGermany
CityGreifswald
Period16/10/0719/10/07

Keywords

  • ECRH
  • Low-temperature
  • Magnetic confinement
  • Phased array antenna

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