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Branching and fragmentation of dipole strength in 181Ta in the region of the scissors mode
https://repo.qst.go.jp/records/47928
https://repo.qst.go.jp/records/479289ec1cdad-d925-40b6-b9a2-2589e7329a0c
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2017-05-01 | |||||
| タイトル | ||||||
| タイトル | Branching and fragmentation of dipole strength in 181Ta in the region of the scissors mode | |||||
| 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 |
エンジェル, クリストファー
× エンジェル, クリストファー× 羽島, 良一× 静間, 俊行× Ludewigt, B.× B.J., Quiter× エンジェル クリストファー× 羽島 良一× 静間 俊行 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | In recent measurements of the scissors mode in radiative decay experiments, transition strengths were observed that were double that expected from theory and systematics well established from measurements on the radiative excitation channel, that is, using nuclear resonance fluorescence (NRF). Additional strength as measured with NRF can only be present as heretofore unobserved branching or fragmentation of the scissors mode. Such possibilities were investigated in a transmission NRF measurement on the deformed, odd-mass 181Ta, using a quasimonoenergetic γ-ray beam at two beam energies. This measurement further influences applications using transmission NRF to assay or detect odd-mass fissile isotopes. A large branching, ≈75%, of small resonances to excited states was discovered. In contrast, previous studies using NRF of the scissors-mode strength in odd-mass nuclei assumed no branching existed. The presently observed branching, combined with the observed highly fragmented elastic strength, could reconcile the scissors-mode strength observed in NRF measurements with the expectations for enhanced scissors-mode strength from radiative decay experiments. |
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| 書誌情報 |
Physical Review Letters 巻 117, 号 14, p. 142501-1-142501-5, 発行日 2016-09 |
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| 出版者 | ||||||
| 出版者 | American Physical Society | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1103/physrevlett.117.142501 | |||||
