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Short-lived radioisotope 98Tc synthesized by supernova neutrino process
https://repo.qst.go.jp/records/49173
https://repo.qst.go.jp/records/49173f615bcea-e286-4e49-b3aa-b0217d3b96cf
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-09-14 | |||||
| タイトル | ||||||
| タイトル | Short-lived radioisotope 98Tc synthesized by supernova neutrino process | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Hayakawa, T.
× Hayakawa, T.× Ko, H.× -K., Cheoun M.× Kusakabe, M.× Kajino, T.× D., Usang M.× Chiba, S.× Nakamura, K.× Tolstov, A.× Nomoto, K.× Hashimoto, M.× Ono, M.× Kawano, Toshihiko× J., Mathews Grant× 早川 岳人 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The isotope 98Tc decays to 98Ru with a half-life of 4.2×10^6y. The astrophysical origin of this isotope has remained unknown. In this Letter, we report on the production of 98Tc by neutrino induced reactions in core-collapse supernovae based upon a supernova model in which neutrino-nucleus interactions are included. Our predicted 98Tc abundance at the time of solar system formation is lower than the current measured upper limit of 98Tc. If the initial abundance were to be precisely measured, the 98Tc nuclear cosmochronometer could be used to evaluate the duration time from the last core-collapse supernova to the formation of the solar system. A unique feature of 98Tc neutrino-process nucleosynthesis is the contribution from the charged current reaction with electron anti-neutrinos to the total production. This contribution can be as much as 20%. Hence, among heavy neutrino-synthesized isotopes, 98Tc is the most sensitive to the temperature of the electron anti-neutrinos. |
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| 書誌情報 |
Physical Review Letters 巻 121, p. 102701, 発行日 2018-09 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0031-9007 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1103/PhysRevLett.121.102701 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.121.102701 | |||||
| 関連名称 | https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.121.102701 | |||||
