1. Theory of electron resonance at harmonics of cyclotron frequency--IV.
- Author
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Nath, Om Kar and Singh, R.N.
- Subjects
- *
CYCLOTRON resonance , *ELECTROMAGNETIC waves - Abstract
The higher-order cyclotron harmonic resonance of electrons with the electromagnetic wave is considered. It is shown that the energy gain is oscillatory. The resulting differential equation is solved. The expressions for time period and oscillatory energy gain are obtained.
The resonance of electrons with transverse electromagnetic waves near cyclotron frequency is well known (Gendrin 1965, Helliwell 1967, Knox 1969, Criswell 1969, Dobe1970). Roberts and Buchsbaum (1964) have developed the theory of cyclotron resonance and have shown synchronous and oscillatory energy gain of electrons. The higher-order cyclotron harmonic resonance was considered by Shkarofsky (1968). In the laboratory plasma and in the ionospheric plasma harmonic resonances are limited in time response by cyclotron damping. In this paper we have generalized Roberts and Buchshaum's theory of wave-particle interaction to account for the effect of harmonic resonances. We find that the energy gain of an electron during cyclotron harmonic resonance is oscillatory even when n=1. The approximations made in Roberts and Bnchsbaum's formulation arc relaxed and generalized solutions for electron energy gain and time period of energy oscillation are obtained. [ABSTRACT FROM AUTHOR] - Published
- 1971
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