Evidence for a smooth onset of deformation in the neutron-rich Kr isotopes.
Evidence for a smooth onset of deformation in the neutron-rich Kr isotopes.
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DOI：
10.1103/physrevlett.108.062701
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发表时间：
2012-02
影响因子：
8.6
通讯作者：
M. Albers;N. Warr;K. Nomura;A. Blazhev;J. Jolie;D. Mücher;B. Bastin;C. Bauer;C. Bernards
中科院分区：
文献类型：
--
作者：
M. Albers;N. Warr;K. Nomura;A. Blazhev;J. Jolie;D. Mücher;B. Bastin;C. Bauer;C. Bernards
在欧洲核子研究中心的REX-ISOLDE装置上，利用库仑激发方法对丰中子核94、96 Kr进行了研究。在氪原子链的E（2（1）（+））和B（E2;2（1）（+）→0（1）（+））系统学的背景下，确定并讨论了第一激发态2（+）的能级能量及其到基态的绝对E2跃迁强度.与以前发表的结果相反，没有观察到突然发生的变形。基于约束Hartree-Fock-Bogoliubov方法，采用微观Gogny-D1 M能量密度泛函，建立了一个新的质子-中子相互作用玻色子模型，并对实验结果进行了验证.
The neutron-rich nuclei 94,96Kr were studied via projectile Coulomb excitation at the REX-ISOLDE facility at CERN. Level energies of the first excited 2(+) states and their absolute E2 transition strengths to the ground state are determined and discussed in the context of the E(2(1)(+)) and B(E2;2(1)(+)→0(1)(+)) systematics of the krypton chain. Contrary to previously published results no sudden onset of deformation is observed. This experimental result is supported by a new proton-neutron interacting boson model calculation based on the constrained Hartree-Fock-Bogoliubov approach using the microscopic Gogny-D1M energy density functional.