2023 Impact factor 2.6
Hadrons and Nuclei
Eur. Phys. J. A 15, 299-302 (2002)
DOI: 10.1140/epja/i2002-10082-0

Short Note

Rotational alignment of the $\mth{h_{11/2}}$ band in $\chem{^{157}Dy}$

T. Hayakawa1, Y. Toh1, M. Oshima1, M. Matsuda1, Y. Hatsukawa1, J. Katakura1, H. Iimura1, T. Shizuma1, S. Mitarai2, M. Sugawara3, H. Kusakari4 and Y.H. Zhang5

1  Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan
2  Kyushu University, Hakozaki, Fukuoka 812-8581, Japan
3  Chiba Institute of Technology, Narashino, Chiba 275-8588, Japan
4  Chiba University, Inage-ku, Chiba 263-8522, Japan
5  Institute of Modern Physics, Chinese Academy of Science, Lanzhou 730000, PRC


(Received: 22 August 2002 / Revised version: 24 September 2002 / Published online: 19 November 2002)

High-spin states of 157Dy were investigated using in-beam $\gamma$-ray spectroscopy techniques with a 150Nd( 12C, 5n) reaction. Three rotational bands with the h9/2, i13/2 and h11/2 configurations were observed up to (43/2 -), 53/2 + and 45/2 -, respectively. Interband M1 transitions in the h11/2 (high- ${\Omega}$) band were also measured up to the highest-spin state. The high-spin states were well reproduced by calculations using the tilted-axis-cranking model (TAC). The B(M1)/B(E2) ratio, Routhian and the tilted angle of the angular-momentum vector are found to be in good agreement with the result of the TAC calculation.

23.20.Lv - Gamma transitions and level energies .
27.70.+q - $150 \leq A \leq 189$ .
21.60.Ev - Collective models.

© Società Italiana di Fisica, Springer-Verlag 2002