
Accession Number : AD0787455
Title : Numerical Solutions of the ThreeDimensional Kinetic Equation of the Parametric Decay Instability.
Descriptive Note : Final rept. Jan 7374,
Corporate Author : AIR FORCE WEAPONS LAB KIRTLAND AFB N MEX
Personal Author(s) : Letterio,J. D. ; Godfrey,B. B.
Report Date : JUL 1974
Pagination or Media Count : 136
Abstract : The threedimensional time dependent kinetic equation for the saturation of the weakly driven parametric decay instability is solved numerically. Two cases are considered: (1) nonlinear Landau damping only and (2) nonlinear Landau damping plus modecoupling. For both, relative pump powers range from 1 to 20. In general, the modecoupling terms act to enhance saturation energy somewhat at large angles, without significantly affecting the total saturation energy level or the time evolution prior to saturation. For a deuterium plasma, the anomalous resistivity rate (relative to the plasma collision frequency) is found to be approximately 3.2 P sup(1.35), with P the relative pump power. (Author)
Descriptors : *Plasmas(Physics), *Laser beams, Langmuir probes, Optical pumping, Instability, Spectrum analysis, Computer programs, FORTRAN, Deuterium
Subject Categories : Plasma Physics and Magnetohydrodynamics
Distribution Statement : APPROVED FOR PUBLIC RELEASE