| Original Articles |
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Detailed Spectral Line Effects on the Radiative Opacity of
Laser-Produced Al Plasmas
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| ZENG Jiao-Long;JIN Feng-Tao;YUAN Jian-Min |
| Department of Applied Physics, National University of Defense Technology, Changsha 410073 |
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| Cite this article: |
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ZENG Jiao-Long, JIN Feng-Tao, YUAN Jian-Min 2001 Chin. Phys. Lett. 18 924-926 |
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Abstract The detailed term accounting (DTA) approximation for the line absorption and the average atom (AA) model for bound-free and free-free absorption are used to calculate the radiative opacity of high-power laser-produced plasmas in local thermodynamic equilibrium (LTE). The spectral resolved opacities of Al plasmas are calculated at the temperature and density of 40 eV and 0.0135 g/cm3 and 58 eV and 0.02 g/cm3. Rosseland and Planck mean opacities are obtained by integrating the spectral resolved opacities with Rosseland and Planck weighting functions. The results show that the Rosseland mean opacity is very sensitive to the detailed profile. Radiative opacities under the same plasma conditions are also obtained by using a completely pure AA model. The results from the DTA and pure AA models are then compared.
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52.25.Nr
52.20.-j
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Published: 01 July 2001
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