Year: 2007
Type: article
Abstract: A high amplitude right circularly polarized (RCP) electromagnetic wave in a magnetized plasma parametrically decays into a pair of electrostatic waves. The prominent decay wave pairs are (i) two lower hybrid waves, (ii) two upper hybrid waves, and (iii) a lower hybrid wave and an upper hybrid wave. The phase matching conditions for these processes are satisfied over a wide range of plasma density, no longer restricting the parametric instability near the quarter critical density. However in the radial density profile produced by the pump wave with Gaussian distribution of intensity, only lower hybrid waves may get localized. The growth rate of each decay process is resonantly enhanced when the pump frequency is close to the electron cyclotron frequency. The growth rates for different channels maximize at different values of angles between the wave vectors of the decay wave and the static magnetic field.
Source: Physica Scripta
Authors: Anuraj Panwar, A K Sharma
Institution: Indian Institute of Technology Delhi
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2006641582