Electron parametric instabilities in nonuniform plasma with a strong density gradient excited by femtosecond laser pulses of subrelativistic intensity
- Faculty of Physics and International Laser Center, M.V. Lomonosov Moscow State University, Vorob’evy Gory, 119991 Moscow (Russian Federation)
We consider the excitation of electron parametric instability in the oblique incidence of femtosecond laser radiation of subrelativistic intensity on a plasma with the nonuniformity scale length of the order of the radiation wavelength λ. Estimates are obtained for two-plasmon decay instability increments in this plasma, and the generation of plasma waves due to parametric instabilities is numerically simulated by the particle-in-cell technique. The spatial spectrum of these waves is shown to broaden to the level corresponding to several values of the wavenumber k{sub 0} of the component aligned with the electron density gradient and the wavenumbers of the component normal to the gradient have values ∼ k{sub 0}. (paper)
- OSTI ID:
- 23004925
- Journal Information:
- Quantum Electronics (Woodbury, N.Y.), Vol. 49, Issue 4; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7818
- Country of Publication:
- United States
- Language:
- English
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