Saturation of Raman scattering in nonlinear regime
| Autor: | F. M. Aghamir, Sara S. Ghaffari-Oskooei |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Pulse duration Plasma Laser 01 natural sciences Instability Atomic and Molecular Physics and Optics 010305 fluids & plasmas law.invention symbols.namesake Nonlinear system Physics::Plasma Physics law 0103 physical sciences symbols Landau damping Atomic physics 010306 general physics Saturation (magnetic) Raman scattering |
| Zdroj: | The European Physical Journal D. 73 |
| ISSN: | 1434-6079 1434-6060 |
| DOI: | 10.1140/epjd/e2019-80613-8 |
| Popis: | Saturation of Raman scattering of laser pulses in plasma, which is expected for hohlraum targets in ICF, is investigated. Trapping and Langmuir decay instability are two major candidates for saturation of Raman scattering in nonlinear regime. Coupled equations of plasma and scattered waves are derived and solved analytically in nonlinear regime where the effect of Landau damping and nonlinear frequency shift is considered. The solution leads to derivation of scattered waves growth and their reflectivity. Plots of reflectivity of scattered waves under various laser beam and plasma conditions are presented. The effects of plasma temperature and its density, as well as, laser frequency, its intensity and pulse duration on reflectivity are discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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