Signature-dependent triaxiality for shape evolution from superdeformation in rapidly rotating 40Ca and 41Ca
Signature-dependent triaxiality for shape evolution from superdeformation in rapidly rotating 40Ca and 41Ca
复制标题
快速旋转 40Ca 和 41Ca 中超变形形状演化的特征相关三轴性
DOI:
10.1093/ptep/ptaa071
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发表时间:
2020
影响因子:
3.5
通讯作者:
Matsuo Masayuki
中科院分区:
文献类型:
--
作者:
Sakai Shinkuro;Yoshida Kenichi;Matsuo Masayuki
We investigate the possible occurrence of highly elongated shapes near the yrast line inCa andCa at high spins on the basis of the nuclear energy-density functional method. Both the superdeformed (SD) yrast configuration and the yrare configurations on top of the SD band are described by solving the cranked Skyme–Kohn–Sham equation in the three-dimensional coordinate space representation. It is suggested that some of the excited SD bands undergo band crossings and develop to hyperdeformation (HD) beyondinCa. We find that the change of triaxiality in response to rotation plays a decisive role in the shape evolution towards HD, and that this is governed by the signature quantum number of the last occupied orbital at low spins. This mechanism can be verified in an experimental observation of the positive-parity SD yrast signature-partner bands inCa, one of which () undergoes crossings with the HD band, while the other () shows smooth evolution from collective rotation at low spins to non-collective rotation with an oblate shape at termination.
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影响因子:
3.1
作者:
D. Ray;A. Afanasjev
通讯作者:
D. Ray;A. Afanasjev
影响因子:
3.1
作者:
C. O’Leary;M. Bentley;B. A. Brown;D. Appelbe;R. Bark;D. Cullen;S. Ertürk;A. Maj;A. Merchant
通讯作者:
C. O’Leary;M. Bentley;B. A. Brown;D. Appelbe;R. Bark;D. Cullen;S. Ertürk;A. Maj;A. Merchant
影响因子:
--
作者:
Y. Shimizu;K. Matsuyanagi
通讯作者:
K. Matsuyanagi
DOI:
10.1140/epja/i2002-10125-6
发表时间:
2003
期刊:
The European Physical Journal A - Hadrons and Nuclei
影响因子:
--
作者:
M. Lach;J. Styczeń;W. Mȩczyński;P. Bednarczyk;A. Bracco;J. Grebosz;A. Maj;J. C. Merdinger.;N. Schulz;M. Smith;K. Spohr;J. Vivien;M. Ziȩbliński
通讯作者:
M. Ziȩbliński
DOI:
10.1016/0375-9474(80)90311-5
发表时间:
1980
期刊:
Nuclear Physics
影响因子:
--
作者:
J. Egido;H. J. Mang;P. Ring
通讯作者:
P. Ring