Beta Decay of153Ndand Reflection Asymmetric Deformation in153Pm
| Autor: | Kiyoshi Kawade, Hiroshi Yamamoto, S. Yamada, A. Osa, Yoichi Kawase, Akihiro Taniguchi, Jian-zhi Ruan, Kotoyuki Okano, T. Ikuta |
|---|---|
| Rok vydání: | 1996 |
| Předmět: | |
| Zdroj: | Journal of the Physical Society of Japan. 65:3824-3834 |
| ISSN: | 1347-4073 0031-9015 |
| DOI: | 10.1143/jpsj.65.3824 |
| Popis: | The level structure of 153 Pm has been studied from the decay of 153 Nd. The radioactivities of 153 Nd were separated from the fission products of 235 U using the upgraded KUR-ISOL. A precise decay scheme of 153 Nd has been constructed up to 2 MeV and 115 γ-rays and 36 levels were involved in the decay scheme, in which 107 γ-rays and 28 levels were newly observed. The multipolarities and E2/M1 mixing ratios of 11 γ-transitions were deduced from the measurement of internal conversion electrons. From the results of the angular correlation measurements, the spin values of 450.5, 105.4 and 32.3 keV levels were deduced to be 3/2 + , 7/2 + and 5/2 + , respectively and the previous assignments were confirmed. The half-lives of 32.3 and 105.4 keV levels were determined to be 1.2(1) ns and 0.44(2) ns, respectively and the enhanced E1 transitions with B ( E1)=10 -3 ∼10 -4 W.u. were observed. The 153 Pm level structure was compared with the result of a calculation with a rotation-vibration coupling model (RVCM) and ... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|