Better Understanding of Hydrogen Pellet Ablation Cloud Spectra through the Occupation Probability Formalism in LHD
We have recently incorporated the occupation probability formalism (OPF) in the simulation model [C. Stehlé and S. Jacquemot, <i>Astron. Astrophys.</i> <b>271</b>, 348 (1993)] to have a smooth transition from discrete lines to continuum spectrum in the wavelength range near t...
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2024-01-01
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| author | Motoshi Goto Gen Motojima Ryuichi Sakamoto Bernard Pégourié Akinobu Matsuyama Tetsutarou Oishi Tomoko Kawate Yasuko Kawamoto |
| author_facet | Motoshi Goto Gen Motojima Ryuichi Sakamoto Bernard Pégourié Akinobu Matsuyama Tetsutarou Oishi Tomoko Kawate Yasuko Kawamoto |
| author_sort | Motoshi Goto |
| collection | DOAJ |
| description | We have recently incorporated the occupation probability formalism (OPF) in the simulation model [C. Stehlé and S. Jacquemot, <i>Astron. Astrophys.</i> <b>271</b>, 348 (1993)] to have a smooth transition from discrete lines to continuum spectrum in the wavelength range near the Balmer series limit. We have analyzed spectra measured for the hydrogen pellet ablation cloud in the Large Helical Device with the revised model, and have found that the electron density in the ablation cloud has a close correlation with the electron temperature of the background plasma. This type of correlation is first confirmed in the present analysis and should give a new insight in the simulation studies of pellet ablation for the magnetically confined fusion plasma. |
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| id | doaj.art-80bd29f25e454fbcbc9d8dc9ee7b1ec4 |
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| issn | 2218-2004 |
| language | English |
| last_indexed | 2024-03-08T11:06:26Z |
| publishDate | 2024-01-01 |
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| spelling | doaj.art-80bd29f25e454fbcbc9d8dc9ee7b1ec42024-01-26T15:02:41ZengMDPI AGAtoms2218-20042024-01-01121110.3390/atoms12010001Better Understanding of Hydrogen Pellet Ablation Cloud Spectra through the Occupation Probability Formalism in LHDMotoshi Goto0Gen Motojima1Ryuichi Sakamoto2Bernard Pégourié3Akinobu Matsuyama4Tetsutarou Oishi5Tomoko Kawate6Yasuko Kawamoto7National Institute for Fusion Science, Toki 509-5292, JapanNational Institute for Fusion Science, Toki 509-5292, JapanNational Institute for Fusion Science, Toki 509-5292, JapanCEA, IRFM, F-13108 Saint-Paul-lez-Durance, FranceGraduate School of Energy Science, Kyoto University, Kyoto 611-0011, JapanDepartment of Quantum Science and Energy Engineering, Tohoku University, Sendai 980-8579, JapanNational Institute for Fusion Science, Toki 509-5292, JapanNational Institute for Fusion Science, Toki 509-5292, JapanWe have recently incorporated the occupation probability formalism (OPF) in the simulation model [C. Stehlé and S. Jacquemot, <i>Astron. Astrophys.</i> <b>271</b>, 348 (1993)] to have a smooth transition from discrete lines to continuum spectrum in the wavelength range near the Balmer series limit. We have analyzed spectra measured for the hydrogen pellet ablation cloud in the Large Helical Device with the revised model, and have found that the electron density in the ablation cloud has a close correlation with the electron temperature of the background plasma. This type of correlation is first confirmed in the present analysis and should give a new insight in the simulation studies of pellet ablation for the magnetically confined fusion plasma.https://www.mdpi.com/2218-2004/12/1/1hydrogen pelletablation cloudspectroscopyStark broadeninglocal thermodynamic equilibriumoccupation probability formalism |
| spellingShingle | Motoshi Goto Gen Motojima Ryuichi Sakamoto Bernard Pégourié Akinobu Matsuyama Tetsutarou Oishi Tomoko Kawate Yasuko Kawamoto Better Understanding of Hydrogen Pellet Ablation Cloud Spectra through the Occupation Probability Formalism in LHD Atoms hydrogen pellet ablation cloud spectroscopy Stark broadening local thermodynamic equilibrium occupation probability formalism |
| title | Better Understanding of Hydrogen Pellet Ablation Cloud Spectra through the Occupation Probability Formalism in LHD |
| title_full | Better Understanding of Hydrogen Pellet Ablation Cloud Spectra through the Occupation Probability Formalism in LHD |
| title_fullStr | Better Understanding of Hydrogen Pellet Ablation Cloud Spectra through the Occupation Probability Formalism in LHD |
| title_full_unstemmed | Better Understanding of Hydrogen Pellet Ablation Cloud Spectra through the Occupation Probability Formalism in LHD |
| title_short | Better Understanding of Hydrogen Pellet Ablation Cloud Spectra through the Occupation Probability Formalism in LHD |
| title_sort | better understanding of hydrogen pellet ablation cloud spectra through the occupation probability formalism in lhd |
| topic | hydrogen pellet ablation cloud spectroscopy Stark broadening local thermodynamic equilibrium occupation probability formalism |
| url | https://www.mdpi.com/2218-2004/12/1/1 |
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