Efficiency enhancement of anomalous-Doppler electron cyclotron masers with tapered magnetic field

Journal Article · Sat Feb 15 00:00:00 EST 2014 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4866909· OSTI ID:22252026

Xie, Chao-Ran; Hou, Zhi-Ling ^[1]; Kong, Ling-Bao ^[2]; Liu, Pu-Kun; Du, Chao-Hai ^[2]; Jin, Hai-Bo ^[3]

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1. Beijing Key Laboratory of Harmful Chemicals Analysis and School of Science, Beijing University of Chemical Technology, Beijing 100029 (China)
2. School of Electronics Engineering and Computer Science, Peking University, Beijing 100871 (China)
3. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081 (China)

The efficiency of slow-wave electron cyclotron masers (ECM) is usually low, thus limiting the practical applications. Here, a method of tapered magnetic field is introduced for the efficiency enhancement of the slow-wave ECM. The numerical calculations show that the tapered magnetic-field method can enhance the efficiency of slow-wave ECM significantly. The effect of beam electron velocity spread on the efficiency has also been studied. Although the velocity spread reduces the efficiency, a great enhancement of efficiency can still be obtained by the tapered magnetic field method.

• OSTI ID: 22252026
• Journal Information: Physics of Plasmas, Vol. 21, Issue 2; Other Information: (c) 2014 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
BEAMS
EFFICIENCY
ELECTRONS
MAGNETIC FIELDS
MICROWAVE AMPLIFIERS
VELOCITY