摘要
Angular-momentum-projected energy surface calculations for A ≈ 110 nuclei indicate three distinct energy minima occurring at different angular-momenta. These correspond to normal, super-, and hy- per-deformed shapes coexisting in one nucleus. 110Pd is studied in detail, with a quantitative prediction on super- and hyper-deformed spectra by the Projected Shell Model calculation. It is found that several other neighboring nuclei in the A-110 mass region, with the neutron number around 64, also exhibit clear super- and hyper-deformation minima in the projected calculation.
Angular-momentum-projected energy surface calculations for A ≈ 110 nuclei indicate three distinct energy minima occurring at different angular-momenta. These correspond to normal, super-, and hyper-deformed shapes coexisting in one nucleus. ^110Pd is studied in detail, with a quantitative prediction on super- and hyper-deformed spectra by the Projected Shell Model calculation. It is found that several other neighboring nuclei in the A-110 mass region, with the neutron number around 64, also exhibit clear super- and hyper-deformation minima in the projected calculation.
作者
SUN Yang1,2, ZHANG JingYe3, LONG GuiLu4,5 & WU ChengLi6,7 1 Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China
2 Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556, USA
3 Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
4 Department of Physics, Tsinghua University, Beijing 100084, China
5 Center of Nuclear Theory, Lanzhou National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China
6 Department of Physics, Xiamen University, Xiamen 361005, China
7 Department of Physics, Chung Yuan Christian University, Chung-Li, Taiwan 32023, China
基金
Supported by the National Basic Research Program of China (Grant No. 2007CB815005)
National Science Foundation of U.S. (Grant No. PHY-0216783) (Y.S.)
Department of Energy of U.S. (Grant No. DE-FG02-96ER40983) (J.-Y.Z.)
National Natural Science Foundation of China (Grant No. 10325521) (G.L.L.)
关键词
原子核
光谱
角动量
能量
nuclear shape, hyper-deformation, angular momentum projection
