Quasitransient backward Raman amplification of powerful laser pulses in dense plasmas with multicharged ions

Journal Article · Thu Jul 15 00:00:00 EDT 2010 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3460347· OSTI ID:21389138

Malkin, V M; Fisch, N J ^[1]

---

1. Department of Astrophysical Sciences, Princeton University, Princeton, New Jersey 08544 (United States)

The range of plasma parameters, where the efficient quasitransient backward Raman amplification (QBRA) of powerful laser pulses is possible, is determined for dense plasmas with multicharged ions. Approximate scalings that portray in a simple way the efficient QBRA range in multidimensional parameter space are found. The calculation, applicable to infrared, ultraviolet, soft x-ray, and x-ray laser pulses, takes into account plasma heating by the lasers. It is shown that efficient QBRA can survive even the nonsaturated linear Landau damping of the Langmuir wave mediating the energy transfer from the pump to the seed laser pulse; moreover, this survival does not require very intense seed laser pulses.

• OSTI ID: 21389138
• Journal Information: Physics of Plasmas, Vol. 17, Issue 7; Other Information: DOI: 10.1063/1.3460347; (c) 2010 American Institute of Physics; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AMPLIFICATION
ENERGY TRANSFER
LANDAU DAMPING
MULTICHARGED IONS
PLASMA
PLASMA HEATING
PULSES
SOFT X RADIATION
ULTRAVIOLET RADIATION
X-RAY LASERS
CHARGED PARTICLES
DAMPING
ELECTROMAGNETIC RADIATION
HEATING
IONIZING RADIATIONS
IONS
LASERS
RADIATIONS
X RADIATION