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A scheme to enhance the conversion efficiency of slow‐wave electron cyclotron masers in the large signal approximation
Author(s) -
Zhang YuFei,
Wang Kang,
Li YongMing,
Jing Jian
Publication year - 2018
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.201700214
Subject(s) - maser , cyclotron , physics , electron , computational physics , terahertz radiation , signal (programming language) , doppler effect , magnetic field , cathode ray , optics , scheme (mathematics) , atomic physics , computer science , quantum mechanics , mathematics , mathematical analysis , programming language
Based on the anomalous Doppler effect, we propose a scheme to improve the practicability of slow‐wave electron cyclotron masers in the large signal approximation. This scheme simultaneously contains the tapered guiding magnetic field and tapered refractive index. Numerical calculations show that this scheme enables the conversion efficiency to reach a higher value within a shorter time than previous schemes. Besides, this scheme also works well in the cases of THz wave band and beam axial‐velocity spread.