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Investigation on non-LTE radiation emitted from a laser-irradiated Au disk

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Abstract

The spectral character of X-ray emitted from laser-irradiated gold disk is studied by using the one-dimensional non-LTE multigroup radiation transport hydrodynamics code RDMG. The applicability of the “three-temperature” model in which the radiation is described with thermal conduction approximation is checked. The simulation results show that the X-ray emitted from the laser-produced gold plasm is in non-LTE, and that the atom model has significant effect on the structure of X-ray spectrum. However, the plasma states, laser absorption efficiency and X-ray conversion efficiency, which are calculated with the “three-temperature” model, are almost the same as those with non-LTE multigroup radiation transport model. This fact indicates that the “three-temperature” model can be used to study plasma states and the energy distributions produced by a laser-irradiated high-Z target. This is meaningful to the 2-D or 3-D simulation.

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Authors and Affiliations

  1. Institute of Applied Physics and Computational Mathematics, P.O. Box 8009, 100088, Beijing, China

    Peijun Gu, Wenbing Pei, Tinggui Feng & Changshu Wu

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  1. Peijun Gu
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  2. Wenbing Pei
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  3. Tinggui Feng
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  4. Changshu Wu
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Correspondence to Peijun Gu.

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Gu, P., Pei, W., Feng, T. et al. Investigation on non-LTE radiation emitted from a laser-irradiated Au disk. SCI CHINA SER G 48, 345–360 (2005). https://doi.org/10.1360/04yw0079

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  • DOI: https://doi.org/10.1360/04yw0079

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