Microwave experiments on Prairie View Rotamak

Journal Article · Fri May 15 00:00:00 EDT 2015 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4921129· OSTI ID:22410364

Zhou, R. J. ^[1]; Xu, M.; Huang, Tian-Sen ^[1]

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1. Prairie View A and M University, Prairie View, Texas 77446 (United States)

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.

• OSTI ID: 22410364
• Journal Information: Physics of Plasmas, Vol. 22, Issue 5; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTRIC CURRENTS
ELONGATION
EXPERIMENTAL DATA
GHZ RANGE
HYDROGEN
IONIZATION
MAGNETIC FIELDS
MICROWAVE HEATING
MICROWAVE RADIATION
OSCILLATIONS
PLASMA