Microwave Radiation from a Plasma in a Magnetic Field (I)

概要

論文の詳細を見る
The microwave radiations from a dc discharge plasma in a magnetic field were studied. The experimental results showed that the resonant radiations of the extraordinary wave, Propagating Perpendicular to a magnetic field, were observed not only at ω=(ω_p^2+ω_b^2)^<1/2>, but also near the cyclotron harmonics. On the other hand, it was shown that the dispersion relation for the plasma type oscillations derived by Bernstein had a harmonic stmcture: In our experimental condition this dispersion curve was divided into many branches, each of which approached asymptotically to the curves given by ω^2=ω_p^2+ω_b^2 and by ω=nω_b(n being an integer). The resonant radiation detected was interpreted as the plasma type radiation, above mentioned. The gaps in the radiation spectrum at the cydotron harmonics were not measured in our discharge plasmas. Further, the number of the successive harmonics in a radiation increased with decreasing a gas pressure, independently of a kind of gas used.
社団法人日本物理学会の論文
1964-02-05