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Excitation of cylindrical electron Bernstein waves by modulated thin electron beams
Author(s) -
Ohnuma Toshiro,
Shibata Kan,
Adachi Saburo
Publication year - 1975
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs010i012p01071
Subject(s) - electron , excitation , physics , atomic physics , amplitude , electron density , perpendicular , magnetic field , plasma , electromagnetic electron wave , optics , quantum mechanics , geometry , mathematics
When cylindrical electron beams, density modulated at a prescribed repetition frequency ( f ≈ 3 to 6 MHz), are injected into plasmas along a magnetic field, cylindrical electron Bernstein waves are found to be launched nearly perpendicular to the electron beams. The wave amplitude and frequency are controlled easily. The mechanism of the excitation of cylindrical electron Bernstein waves by electron beams is investigated theoretically to explain the experimental results.