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Title: Microwave experiments on Prairie View Rotamak

Abstract

A 6 kW/2.45 GHz microwave system has been added on Prairie View Rotamak, and a series of experiments with microwave heating in both O-mode and X-mode configurations have been performed. Effective ionization of hydrogen in the two configurations is observed when filling pressure of the hydrogen gas is under p{sub f}=0.1 Pa. Clear oscillations in plasma current I{sub p} and magnetic field B{sub R} are excited when microwaves are injected into plasma in the X-mode configuration. The higher the injected microwave power, the sooner the emergence of the magnetic oscillations in B{sub R}, which implies the microwave may have decreased the elongation of the plasma. In the experiments, the efficiency of the current drive mechanism due to the injected microwave is about 0.2 kA/kW.

Authors:
 [1];  [2]; ;  [1]
  1. Prairie View A and M University, Prairie View, Texas 77446 (United States)
  2. (China)
Publication Date:
OSTI Identifier:
22410364
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 22; Journal Issue: 5; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ELECTRIC CURRENTS; ELONGATION; EXPERIMENTAL DATA; GHZ RANGE; HYDROGEN; IONIZATION; MAGNETIC FIELDS; MICROWAVE HEATING; MICROWAVE RADIATION; OSCILLATIONS; PLASMA

Citation Formats

Zhou, R. J., Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, Xu, M., and Huang, Tian-Sen. Microwave experiments on Prairie View Rotamak. United States: N. p., 2015. Web. doi:10.1063/1.4921129.
Zhou, R. J., Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, Xu, M., & Huang, Tian-Sen. Microwave experiments on Prairie View Rotamak. United States. doi:10.1063/1.4921129.
Zhou, R. J., Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, Xu, M., and Huang, Tian-Sen. Fri . "Microwave experiments on Prairie View Rotamak". United States. doi:10.1063/1.4921129.
@article{osti_22410364,
title = {Microwave experiments on Prairie View Rotamak},
author = {Zhou, R. J. and Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 and Xu, M. and Huang, Tian-Sen},
abstractNote = {A 6 kW/2.45 GHz microwave system has been added on Prairie View Rotamak, and a series of experiments with microwave heating in both O-mode and X-mode configurations have been performed. Effective ionization of hydrogen in the two configurations is observed when filling pressure of the hydrogen gas is under p{sub f}=0.1 Pa. Clear oscillations in plasma current I{sub p} and magnetic field B{sub R} are excited when microwaves are injected into plasma in the X-mode configuration. The higher the injected microwave power, the sooner the emergence of the magnetic oscillations in B{sub R}, which implies the microwave may have decreased the elongation of the plasma. In the experiments, the efficiency of the current drive mechanism due to the injected microwave is about 0.2 kA/kW.},
doi = {10.1063/1.4921129},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 5,
volume = 22,
place = {United States},
year = {2015},
month = {5}
}