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Multimode Characteristics of Space-Charge Waves in a Plasma Waveguide

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Abstract

The multimode characteristics of the space-charge wave are investigated in a cylindrical waveguide complex plasma. The dispersion relation of the space-charge wave is derived in a waveguide, including two-temperature electrons. The results show that the wave frequencies in a plasma with a high population of high-temperature electrons are always smaller those in a plasma with a low population of high-temperature electrons. It is also found that the population of high-temperature electrons suppresses the group velocity of the space-charge wave. In addition, it is found that the frequency increases with an increase in the radius of the cylindrical wave guide. The variations of the frequency and the group velocity due to the density, temperature, and geometric effects are also discussed.This paper is dedicated to the late Prof. P.K. Shukla in memory of exciting and stimulating collaborations on physical processes in dusty plasmas. One of the authors (Y.-D.J.) gratefully acknowledges Dr. M. Rosenberg for useful discussions and warm hospitality while visiting the Department of Electrical and Computer Engineering at the University of California, San Diego. This research was initiated while one of the authors (Y.-D.J.) was affiliated with University of California, San Diego, as a visiting professor. This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (grant no. 2012-001493)

Topics: Complex plasma, Multimode propagation, space-charge wave
Publisher: WALTER DE GRUYTER GMBH
Year: 2016
DOI identifier: 10.1515/zna-2016-0255
OAI identifier: oai:repository.hanyang.ac.kr:20.500.11754/99080
Provided by: HANYANG Repository
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