Shape evolution in the neutron-rich tungsten region

Journal article

Recent experimental data on the low-lying states in W190 show a change in the E(41+)/E(21+) behavior compared to less neutron-rich neigbors. Self-consistent axially-deformed Hartree-Fock calculations, using a separable monopole interaction, of nuclei in the vicinity of W190 are performed to systematically examine the evolution of ground state quadrupole deformations. It is found that the neutron number N=116 causes a coexistence of oblate and prolate shapes, with a weak dependence on proton number, thereby hindering the development of these isotones as well-deformed rotors. © 2005 The American Physical Society.

Authors: Stevenson, P; Brine, M; Podolyak, Z; Regan, P; Walker, P

• Journal: Physical Review C - Nuclear Physics
• Volume: 72
• Issue: 4
• Publication date: 2005-10-01
• DOI: 10.1103/PhysRevC.72.047303
• EISSN: 1089-490X
• ISSN: 0556-2813
• Language: English