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Absorption experiments on radiatively heated Al plasma

Xu Yan Yan Jun Meng Guang-Wei Zhang Ji-Yan Yang Jia-Min Yang Guo-Hong Ding Yao-Nan Wang Yan

Absorption experiments on radiatively heated Al plasma

Xu Yan, Yan Jun, Meng Guang-Wei, Zhang Ji-Yan, Yang Jia-Min, Yang Guo-Hong, Ding Yao-Nan, Wang Yan
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  • Abstract views:  3466
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  • Received Date:  27 April 2007
  • Accepted Date:  12 May 2007
  • Published Online:  20 February 2008

Absorption experiments on radiatively heated Al plasma

  • 1. (1)北京应用物理与计算数学研究所,北京 100088; (2)中国工程物理研究院激光聚变研究中心,绵阳 621900

Abstract: K-shell absorption spectroscopy of radiatively heated Al sample is reported. The experiment was conducted on Shenguang-Ⅱ Laser facility. Eight main beams of the facitliy are injected into a conical gold cavity to produce high-temperature X-ray heating source. This X-ray source is then used to irradiate an Al foil located in the center of the cavity, and heat the foil to temperature of tens of electronvolt. After a time delay, a ninth short-pulsed laser beam is focused on a gold disk to generated an X-ray point-backlighter. By measuring the spectra both directly from backlighter and attenuated by the heated sample in the wavelength range of 075—085nm, the K-shell absorption spectrum of Al is obtained. By fitting the experimental spectrum with theoretical calculation, electron temperature of the heated sample is determined.

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