TY - JOUR
T1 - γ-tunneling calculations for the decays of the K isomers in the Hf, W, Os region
AU - Narimatsu, Kanako
AU - Shimizu, Yoshifumi R.
AU - Shizuma, Toshiyuki
N1 - Funding Information:
This work is supported in part by the Grant-in-Aid for Scientific Research of Japan Ministry of Education, Science and Culture under Grant number 06234208. Y.R.S. thanks the Institute for Nuclear Theory at the University of Washington for its hospitality and the Department of Energy for partial support during the completion of this work. T.S. acknowledges the support by the Danish, Finnish and Swedish Natural Science Research Councils.
PY - 1996/4/29
Y1 - 1996/4/29
N2 - Recent studies of the high-K isomers in the Hf, W, Os region have uncovered the existence of direct branches to the low-K rotational bands with unexpectedly large transition probabilities. The measured hindrance factors have called the validity of the K quantum number into question. In order to give a new insight to this problem, we have performed systematic calculations of the M1 and E2 partial life times of the K isomers by using a simple tunneling model in which the γ degree of freedom is taken into account. Many of the observed partial life times are reproduced by the model, but some data remain completely off the calculations. This requires further studies of the spin-orientation degree of freedom.
AB - Recent studies of the high-K isomers in the Hf, W, Os region have uncovered the existence of direct branches to the low-K rotational bands with unexpectedly large transition probabilities. The measured hindrance factors have called the validity of the K quantum number into question. In order to give a new insight to this problem, we have performed systematic calculations of the M1 and E2 partial life times of the K isomers by using a simple tunneling model in which the γ degree of freedom is taken into account. Many of the observed partial life times are reproduced by the model, but some data remain completely off the calculations. This requires further studies of the spin-orientation degree of freedom.
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U2 - 10.1016/0375-9474(96)00021-8
DO - 10.1016/0375-9474(96)00021-8
M3 - Article
AN - SCOPUS:0030605584
SN - 0375-9474
VL - 601
SP - 69
EP - 88
JO - Nuclear Physics A
JF - Nuclear Physics A
IS - 1
ER -