Spectra of Ga-Like to Cu-Like Praseodymium and Neodymium Ions Observed in the Large Helical Device
Extreme ultraviolet (EUV) spectra of highly charged praseodymium (Pr) and neodymium (Nd) ions have been investigated in optically thin high-temperature plasmas produced in the Large Helical Device (LHD), a magnetically confined torus device for fusion research. Discrete spectral lines emitted mainly...
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MDPI AG
2021-07-01
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| Online Access: | https://www.mdpi.com/2218-2004/9/3/46 |
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| author | Chihiro Suzuki Fumihiro Koike Izumi Murakami Tetsutarou Oishi Naoki Tamura |
| author_facet | Chihiro Suzuki Fumihiro Koike Izumi Murakami Tetsutarou Oishi Naoki Tamura |
| author_sort | Chihiro Suzuki |
| collection | DOAJ |
| description | Extreme ultraviolet (EUV) spectra of highly charged praseodymium (Pr) and neodymium (Nd) ions have been investigated in optically thin high-temperature plasmas produced in the Large Helical Device (LHD), a magnetically confined torus device for fusion research. Discrete spectral lines emitted mainly from highly charged ions having 4s or 4p outermost electrons were observed in plasmas with electron temperatures of 0.8–1.8 keV. Most of the isolated lines of Ga-like to Cu-like Nd ions were identified by a comparison with the recent data recorded in an electron beam ion trap (EBIT). The isolated lines of Pr ions corresponding to the identified lines of Nd ions were easily assigned from a similarity of the spectral feature for these two elements. As a result, some of the lines of Pr ions have been newly identified experimentally for the first time in this study. |
| first_indexed | 2024-03-10T07:54:17Z |
| format | Article |
| id | doaj.art-7e918c2744d24685a8f283c4fad14d14 |
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| issn | 2218-2004 |
| language | English |
| last_indexed | 2024-03-10T07:54:17Z |
| publishDate | 2021-07-01 |
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| spelling | doaj.art-7e918c2744d24685a8f283c4fad14d142023-11-22T12:01:20ZengMDPI AGAtoms2218-20042021-07-01934610.3390/atoms9030046Spectra of Ga-Like to Cu-Like Praseodymium and Neodymium Ions Observed in the Large Helical DeviceChihiro Suzuki0Fumihiro Koike1Izumi Murakami2Tetsutarou Oishi3Naoki Tamura4National Institute for Fusion Science, National Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, JapanFaculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, JapanNational Institute for Fusion Science, National Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, JapanNational Institute for Fusion Science, National Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, JapanNational Institute for Fusion Science, National Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki 509-5292, JapanExtreme ultraviolet (EUV) spectra of highly charged praseodymium (Pr) and neodymium (Nd) ions have been investigated in optically thin high-temperature plasmas produced in the Large Helical Device (LHD), a magnetically confined torus device for fusion research. Discrete spectral lines emitted mainly from highly charged ions having 4s or 4p outermost electrons were observed in plasmas with electron temperatures of 0.8–1.8 keV. Most of the isolated lines of Ga-like to Cu-like Nd ions were identified by a comparison with the recent data recorded in an electron beam ion trap (EBIT). The isolated lines of Pr ions corresponding to the identified lines of Nd ions were easily assigned from a similarity of the spectral feature for these two elements. As a result, some of the lines of Pr ions have been newly identified experimentally for the first time in this study.https://www.mdpi.com/2218-2004/9/3/46praseodymiumneodymiumhighly charged ionsLHDEUV spectra |
| spellingShingle | Chihiro Suzuki Fumihiro Koike Izumi Murakami Tetsutarou Oishi Naoki Tamura Spectra of Ga-Like to Cu-Like Praseodymium and Neodymium Ions Observed in the Large Helical Device Atoms praseodymium neodymium highly charged ions LHD EUV spectra |
| title | Spectra of Ga-Like to Cu-Like Praseodymium and Neodymium Ions Observed in the Large Helical Device |
| title_full | Spectra of Ga-Like to Cu-Like Praseodymium and Neodymium Ions Observed in the Large Helical Device |
| title_fullStr | Spectra of Ga-Like to Cu-Like Praseodymium and Neodymium Ions Observed in the Large Helical Device |
| title_full_unstemmed | Spectra of Ga-Like to Cu-Like Praseodymium and Neodymium Ions Observed in the Large Helical Device |
| title_short | Spectra of Ga-Like to Cu-Like Praseodymium and Neodymium Ions Observed in the Large Helical Device |
| title_sort | spectra of ga like to cu like praseodymium and neodymium ions observed in the large helical device |
| topic | praseodymium neodymium highly charged ions LHD EUV spectra |
| url | https://www.mdpi.com/2218-2004/9/3/46 |
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