Experimental indication of the onset of nuclear deformation in neutron-rich Sr isotopes at mass 98 |
| |
Authors: | H Wollnik FK Wohn KD Wünsch G Jung |
| |
Institution: | II. Physikalisches Institut der Universität Giessen, 63 Giessen, Germany |
| |
Abstract: | A partial decay scheme for 0.1 sec 98Rb has been deduced from γ-singles, γ-multispectra ana γγ coincidence measurements taken at the OSTIS mass-separator system at the Institut Laue-Langevin. The low-lying levels of 98Sr follow the energy level systematics of the even-AN = 60 isotones. The onset of nuclear deformation in even-A neutron-rich Sr isotopes appears to occur at mass 98, as the first 2+ level energy drops from the nearly constant value of about 800 keV for masses 90–96 to 144 keV at mass 98. Energy level systematics indicate that a transition in the nuclear structures of the more neutron-rich nuclei near mass 100 occurs rather sharply at neutron number N = 60. |
| |
Keywords: | Radioactivity |
本文献已被 ScienceDirect 等数据库收录! |