Nonlinear Raman forward scattering of a short laser pulse in a collisional transversely magnetized plasma
- Physics Department, Shabestar Branch, Islamic Azad University, Shabestar (Iran, Islamic Republic of)
Nonlinear Raman forward scattering (NRFS) of an intense short laser pulse with a duration shorter than the plasma period through a homogenous collisional transversely magnetized plasma is investigated theoretically when ponderomotive, relativistic and collioninal nonlinearities are taken into account. The plasma is embedded in a uniform magnetic field perpendicular to both, the direction of propagation and electric vector of the radiation field. Nonlinear wave equation is set up and Fourier transformation method is used to solve the coupled equations describing NRFS instability. Finally, the growth rate of this instability is obtained. Thermal effects of plasma electrons and effect of the electron-ion collisions are examined. It is found that the growth rate of Raman forward scattering first decreases on increasing electron thermal velocity, minimizes at an optimum value, and then increases. Our results also show that the growth rate increases by increasing the electron-ion collisions.
- OSTI ID:
- 22113322
- Journal Information:
- Physics of Plasmas, Vol. 20, Issue 1; Other Information: (c) 2013 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ELECTRON-ION COLLISIONS
ELECTRONS
FOURIER TRANSFORMATION
LASER RADIATION
LIGHT TRANSMISSION
MAGNETIC FIELDS
NONLINEAR PROBLEMS
PLASMA INSTABILITY
PONDEROMOTIVE FORCE
PULSES
RAMAN EFFECT
RAMAN SPECTRA
RELATIVISTIC PLASMA
RELATIVISTIC RANGE
SCATTERING
TEMPERATURE DEPENDENCE
VECTORS
WAVE EQUATIONS