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Study of 249Cf by Coulomb Excitation Gamma-ray Spectroscopy
https://repo.qst.go.jp/records/80543
https://repo.qst.go.jp/records/80543dd3a44db-97be-472a-a4d5-e1f0c285f8bc
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-09-01 | |||||
| タイトル | ||||||
| タイトル | Study of 249Cf by Coulomb Excitation Gamma-ray Spectroscopy | |||||
| 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_c94f | |||||
| 資源タイプ | conference object | |||||
| 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 |
Pham, T.T.
× Pham, T.T.× Yanagihara, R.× Ideguchi, E.× Orlandi, R.× Nishio, K.× Makii, H.× Asai, M.× Hirose, K.× Tsukada, K.× Toyoshima, A.× Sato, T.K.× Ito, Y.× Aoi, N.× Yamamoto, Y.× Kumar Raju, M.× Hoang, T.H.× Kohda, A.× Go, S.× Tanaka, M.× Wakabayashi, R.× Shizuma, Toshiyuki× Shizuma, Toshiyuki |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Californium 249 (Z=98, N=151) is a deformed nucleus in the N=152, Z=100 nuclear region. The energy gaps of nuclei in this region arise in the deformed single-particle spectrum. Some excited states in these nuclei are predicted to be built on the same orbits which become spherical in the long-lived Super-Heavy-Element region near N =184, Z = 114 [1,2] (the so-called “Island of Stability”). Studies of excited states in the N=152, Z=100 region, and specifically in this research of 249Cf, provide a connection to the study of shell structure in the Island of Stability. The experiment has been performed at JAEA – Tokai Tandem Laboratory using 4 HPGe detectors and 4 LaBr3 scintillators for gamma detection and 2 S3-type [3] silicon detectors for particle detection. The silicon detectors were placed backward and forward to the target. 18O beam with energy 70 MeV and 58Ni beam with energy 245 MeV have been used for the experiment. A Coulomb excitation with beam energy well below the Coulomb barrier of 249Cf was achieved for the first time. The gamma rays in coincidence with scattered particles give the spectrum of gamma rays emitted from excited states of 249Cf and thus give the intensity of E2 transition. The intensity of E2 transitions, combined with the scattering angle of incoming particle, detector geometry, beam intensity, etc. were used as input for the GOSIA [4] code to deduce the B(E2) value to determine the deformation of 249Cf. The extracted data could help to complete the 249Cf level scheme. |
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| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 日本物理学会2020年秋季大会 | |||||
| 発表年月日 | ||||||
| 日付 | 2020-09-15 | |||||
| 日付タイプ | Issued | |||||
