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Laser hohlraum coupling efficiency on the Shenguang II facility.
- Source :
-
Physics of Plasmas . Nov2002, Vol. 9 Issue 11, p4744. 5p. - Publication Year :
- 2002
-
Abstract
- Recently, hohlraum experiments were performed at the Shenguang-II (SG-II) laser facility [Lin et al., Chin. J. Lasers B10, Suppl. IV6 (2001)]. The measured maximum radiation temperature was 170 eV for the standard hohlraum and 150 eV for a 1.5-scaled one. This paper discusses the radiation temperature and laser hohlraum coupling efficiency in terms of a theoretical model [Phys. Plasmas 8, 1659 (2001)] and numerical simulation. A 2D laser–hohlraum coupling code, LARED-H [Chin. J. Comput. Phys. 19, 57 (2002)], gives a satisfactory coincidence with the measured time-resolved radiation temperature. Upon fitting the time-resolved curve, the theoretical model obtains the hohlraum coupling efficiency and, furthermore, the parameter n+s for the hohlraum wall material (Au) can be determined simultaneously, where n, s are the power exponents of temperature for the radiation Rosseland mean-free path and specific internal energy, respectively. © 2002 American Institute of Physics. [ABSTRACT FROM AUTHOR]
- Subjects :
- *LASER plasmas
*PLASMA gases
Subjects
Details
- Language :
- English
- ISSN :
- 1070664X
- Volume :
- 9
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Physics of Plasmas
- Publication Type :
- Academic Journal
- Accession number :
- 7640302
- Full Text :
- https://doi.org/10.1063/1.1516781