Laser hohlraum coupling efficiency on the Shenguang II facility

Autor:	Wenbing Pei, Peijun Gu, Weiyan Zhang, Zhijian Zheng, Qingsheng Duan, Tieqiang Chang, Tinggui Feng, Dongxian Lai, Yongkun Ding, Guangnan Chen, Guangyu Wang, Shaoping Zhu, Tianxuan Huan, Yongmin Zheng, Xian-Tu He
Rok vydání:	2002
Předmět:	Coupling Physics Computer simulation Internal energy law Hohlraum Plasma Atomic physics Radiation Condensed Matter Physics Laser Inertial confinement fusion law.invention
Zdroj:	Physics of Plasmas. 9:4744-4748
ISSN:	1089-7674 1070-664X
DOI:	10.1063/1.1516781
Popis:	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.
Databáze:	OpenAIRE
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