X-ray spectra of high temperature tungsten plasma calculated with collisional radiative model |
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| Authors: | Wang Jun Zhang Hong and Cheng Xin-Lu |
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| Affiliation: | [1]School of Physical Science and Technology, Sichuan University, Chengdu 610064, China [2]College of Science, Sichuan University of Science and Engineering, Zigong 643000, China |
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| Abstract: | Tungsten is regarded as an important candidate of plasma facing material in international thermonuclear experimental reactor (ITER), so the determination and modeling of spectra of tungsten plasma, especially the spectra at high temperature were intensely focused on recently. In this work, using the atomic structure code of Cowan, a collisional radiative model (CRM) based on the spin-orbit-split-arrays is developed. Based on this model, the charge state distribution of tungsten ions is determined and the soft X-ray spectra from high charged ions of tungsten at different temperatures are calculated. The results show that both the average ionization charge and line positions are well agreed with others calculations and measurements with discrepancies of less than 0.63% and 1.26%, respectively. The spectra at higher temperatures are also reported and the relationship between ion abundance and temperature is predicted in this work. |
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| Keywords: | tungsten plasma high temperature X-ray spectra collisional radiative model |
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