2005 Fiscal Year Final Research Report Summary
Research and Development of unified collisional-radiative model for non-equilibrium plasma and plasma diagnostics
| Project/Area Number |
15540479
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Plasma science
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| Research Institution | National Institute for Fusion Science |
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Principal Investigator |
KATO Takako National Institute for Fusion Science, Coordination Research Center, Professor, 連携研究推進センター, 教授 (20115546)
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| Co-Investigator(Kenkyū-buntansha) |
MURAKAMI Izumi National Institute for Fusion Science, Coordination Research Center, Associate professor, 連携研究推進センター, 助教授 (30290919)
GOTO Motoshi National Institute for Fusion Science, Department of Large Helical Device Project, Research associate, 大型ヘリカル研究部, 助手 (00290916)
KIMURA Mineo Kyushu University, Graduate School of Science, Professor, 大学院・理学研究院, 教授 (00281733)
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| Project Period (FY) |
2003 – 2005
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| Keywords | highly charged ions / oxygen ions / atomic data / dielectronic recombination / plasma spectroscopy |
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| Research Abstract |
In order to make a collisional-radiatice model for non-equilibrium plasma and plasma diagnostics, various atomic data are required to be included in the model. We examined and calculated various atomic data. We calculated state-selective dielectronic recombination (DR) rate coefficients for B-like O ion, C-like O ion, and Mg-like Fe ion by using the Cowan's code (Hartree-Fock-Relativistic method) and Relativistic Many-Body Perturbation Theory code. We found that the contribution of high n levels was not negligible and the configuration mixing played an important role for the DR rate coefficients. In case of N-like O ion, the atomic data calculated with the codes did not have good accuracy, maybe because the charge state is low. We evaluated published proton-impact excitation rate coefficients for M-shell and L-shell Fe ions and, compiled a set of recommended data with fitting parameters to an analytic formula. We examined electron-impact excitation rate coefficients for M-shell Fe ions and picked up the recommended data from published data. We also studied other atomic processes and atomic data, such as ionization cross sections by low energy collision, charge exchange cross section for Hydrogen molecules, and atomic processes for high Z elements such as Xe ions, radiation processes in non-equilibrium plasma, and radiation processes in high density plasma.
Collisional-radiative models for C ions, O ions, and Fe ions were developed and spectral line intensities observed in laboratory plasmas were studied by comparing with the calculated intensities with the models. The plasma properties were examined. Recombination processes and inner-shell ionization processes were include in the model for O ions.
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Research Products
(38 results)
