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Enhancement of electron temperature in a laser-induced plasma using a radio-frequency electric field

Authors :
Takashi Arisawa
Akira Ohzu
Yoji Suzuki
Yoichiro Maruyama
Source :
Physics of Plasmas. 7:770-772
Publication Year :
2000
Publisher :
AIP Publishing, 2000.

Abstract

An experimental study of the enhancement of the electron temperature of a laser-induced plasma by use of radio-frequency dielectric heating has been carried out. A radio-frequency electric field of 140 MHz is used to heat the plasma produced by multistep resonant photoinization. It is clearly observed that the electron temperature increases from 0.3 to 1.0 eV when a radio-frequency input power of 1.0 W is applied. Also, applying heating induces a plasma oscillation. This is due to the generation of ion waves in the plasma, and therefore, means that the enhanced electron temperature is higher than the ion temperature. It is expected that this method will improve the efficiency for extracting ions rapidly from a laser-induced plasma in atomic vapor laser isotope separation.

Details

ISSN :
10897674 and 1070664X
Volume :
7
Database :
OpenAIRE
Journal :
Physics of Plasmas
Accession number :
edsair.doi...........7888338f9159693808bdc4f9e3d8bd5b
Full Text :
https://doi.org/10.1063/1.873871