Generation of a plasma wave and second harmonic in a magnetoplasma

Journal Article · Fri Dec 01 04:00:00 EST 1978 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.324584· OSTI ID:6850184

Thakur, A K.S.; Sharma, R P

This paper presents an investigation of the generation of a plasma wave and a second-harmonic electromagnetic wave in a collilsionless hot magnetoplasma by a Gaussian EM beam (pump wave) propagating perpendicular to a static magnetic field in the ordinary mode. Because of the Gaussian intensity distribution of the EM wave, the ponderomotive force becomes finite and the electrons become redistributed; the electron density gradient (so created) and the intensity gradient of the EM wave lead to the generation of a plasma wave at the pump-wave frequency. The intensity of the magnetic field significantly affects the plasma-wave generation. When the pump-wave frequency is equal to the upper-hybrid frequency, resonant excitation of the plasma wave occurs. The plasma wave interacting with the pump wave leads to the generation of a second-harmonic electromagnetic wave. Moreover, as the pump wave propagates in the plasma, its self-focusing occurs; consequently, the plasma-wave and the second-harmonic generation become drastically affected.

• Research Organization: Department of Physics and Centre of Energy Studies, Indian Institute of Technology, New Delhi-110029 India
• OSTI ID: 6850184
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 49:12; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700103* -- Fusion Energy-- Plasma Research-- Kinetics
COLLISIONLESS PLASMA
ELECTROMAGNETIC RADIATION
FOCUSING
HARMONICS
NONLINEAR PROBLEMS
OSCILLATION MODES
OSCILLATIONS
PLASMA
PLASMA WAVES
RADIATIONS