N=50时的集体性：82 Ge和84 Se
Collectivity at N=50: 82Ge and 84Se
摘要：
利用中能库仑激发和非弹性散射研究了N=50的富中子同位素82 Ge和84 Se。作为典型的中能库仑激发，当入射能量超过70 MeV/核子时，82 Ge和84 Se中只有前2^+态被激发。然而，在9 Be靶上的非弹性散射中，观察到84 Se的第一个4^+态的强布居，而在相邻的偶偶同位素82 Ge中没有类似的强激发。结果进行了讨论的框架内的系统学和壳模型计算使用三种不同的有效相互作用。
英文摘要：
The neutron-rich N=50 isotones 82Ge and 84Se were investigated using intermediate-energy Coulomb excitation on a 197Au target and inelastic scattering on 9Be. As typical for intermediate-energy Coulomb excitation with projectile energies exceeding 70 MeV/nucleon, only the first 2^+ states were excited in 82Ge and 84Se. However, in the inelastic scattering on a 9Be target, a strong population of the first 4^+ state was observed for 84Se, while there is no indication of a similarly strong excitation of the corresponding state in the neighboring even-even isotone 82Ge. The results are discussed in the framework of systematics and shell-model calculations using three different effective interactions.
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