Stimulated Raman Scattering from Hot, Underdense Plasmas

Author

Constantin, C.G. ; Baldis, H.A. ; Schneider, M.B. ; Hinkel, D.E. ; Langdon, A.B. ; Seka, W. ; Bahr, R. ; Depierreux, S.

Author_Institution

California Univ., Davis, CA

fYear

2005

fDate

20-23 June 2005

Firstpage

148

Lastpage

148

Abstract

Summary form only given. Stimulated Raman scattering (SRS) instability has been experimentally investigated in small-scale halfraums irradiated by intense laser pulses at 10 TW power. The driver energy was delivered by the OMEGA laser (LLE, Rochester) in 1 ns pulses, and deposited in a hot, under-dense Au plasma. The laser energy deposition shifts at later times outside the laser entrance hole (LEH) due to a rapid plasma fill of the hohlraum. Most of the SRS light is scattered from this region and detected with time and spectral resolution. The high temperature of the scattering volume is reflected in the SRS spectrum that extends beyond two times the laser wavelength, due to the Bohm-Gross shift. Information about the plasma parameters inferred from the SRS spectra will be discussed

Keywords

gold; plasma diagnostics; plasma instability; plasma light propagation; plasma temperature; stimulated Raman scattering; 1 ns; 10 TW; Au; Bohm-Gross shift; OMEGA laser; laser energy deposition; small-scale halfraums; stimulated Raman scattering instability; underdense plasmas; Ion implantation; Laboratories; Materials science and technology; Plasma immersion ion implantation; Plasma materials processing; Plasma sources; Plasma temperature; Plasma waves; Pulsed laser deposition; Raman scattering;

fLanguage

English

Publisher

ieee

Conference_Titel

Plasma Science, 2005. ICOPS '05. IEEE Conference Record - Abstracts. IEEE International Conference on

Conference_Location

Monterey, CA

ISSN

0730-9244

Print_ISBN

0-7803-9300-7

Type

conf

DOI

10.1109/PLASMA.2005.359137

Filename

4198396