Rotational bands of 159Dy

✍ Scribed by M. Sugawara; S. Mitarai; H. Kusakari; M. Oshima; T. Hayakawa; Y. Toh; Y. Hatsukawa; J. Katakura; H. Iimura; Y.H. Zhang; M. Sugie; Y. Sato

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 177 KB
• Volume: 699
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(01)01280-5

✦ Synopsis

High-spin states of 159 Dy have been studied by using reaction 150 Nd( 13 C, 4n). Two rotational bands based on the configurations ν[521]3/2 and ν[642]5/2 have been extended to 57/2 -and 61/2 + states, respectively. A neutron AB crossing has been observed around hω = 0.26 MeV in the ν[521]3/2 band. It has been observed that the signature splitting is inverted after the band crossing in the ν[521]3/2 band. The first band crossing has been observed around hω = 0.38 MeV in the ν[642]5/2 band. Seven E1 transitions from the ν[521]3/2 band to the ν[642]5/2 band have been observed and discussed on the base of Generalized Intensity Relation. It is found that the B(E1)/B(E2) ratios for 47/2 -and 43/2 -states become enhanced relatively to those for the lowerspin states.