Spatially autoresonant stimulated Raman scattering in nonuniform plasmas

Journal Article · Sat Mar 15 04:00:00 EDT 2008 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2884717· OSTI ID:21106152

Yaakobi, O ^[1]; Friedland, L ^[1]; Lindberg, R R; Charman, A E ^[2]; Penn, G ^[3]; Wurtele, J S ^[2]

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1. Racah Institute of Physics, Hebrew University, Jerusalem 91904 (Israel)
2. Department of Physics, University of California, Berkeley, Berkeley, California 94720 (United States)
3. Center for Beam Physics, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

New solutions to the coupled three-wave equations in a nonuniform plasma medium are presented that include both space and time dependence of the waves. By including the dominant nonlinear frequency shift of the material wave, it is shown that if the driving waves are sufficiently strong (in relation to the medium gradient), a nonlinearly phase-locked solution develops that is characteristic of autoresonance. In this case, the material (electrostatic) wave develops into a front starting at the linear resonance point and moving with the wave group velocity in a manner such that the intensity increases linearly with the propagation distance. The forms of the other two (electromagnetic) waves follow naturally from the Manley-Rowe relations.

• OSTI ID: 21106152
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 3 Vol. 15; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTROMAGNETIC RADIATION
MATHEMATICAL SOLUTIONS
NONLINEAR PROBLEMS
PLASMA
PLASMA WAVES
RAMAN EFFECT
RESONANCE
SPACE
TIME DEPENDENCE
WAVE EQUATIONS