1. Onset of collectivity in neutron deficient 196,198Po.
- Author
-
Bernstein, LA, Cizewski, JA, Jin, H, Younes, W, Henry, RG, Farris, LP, Charos, A, Carpenter, MP, Janssens, RV, Khoo, TL, Lauritsen, T, Bearden, IG, Ye, D, Becker, JA, Henry, EA, Brinkman, MJ, Hughes, JR, Kuhnert, A, Wang, TF, Stoyer, MA, Diamond, RM, Stephens, FS, Deleplanque, MA, Macchiavelli, AO, Lee, IY, Cederwall, B, Oliveira, JR, Burde, J, Fallon, P, Duyar, C, Draper, JE, Rubel, E, and Vo, DT
- Subjects
nucl-ex ,Atomic ,Molecular ,Nuclear ,Particle and Plasma Physics ,Nuclear & Particles Physics - Abstract
We have studied via in-beam -ray spectroscopy Po196 and Po198, which are the first neutron-deficient Po isotopes to exhibit a collective low-lying structure. The ratios of yrast state energies and the E2 branching ratios of transitions from non-yrast to yrast states are indicative of a low-lying vibrational structure. The onset of collective motion in these isotopes can be attributed to the opening of the neutron i13/2 orbital at N112 and the resulting large overlap between the two valence protons in the h9/2 orbital and the valence neutrons in the i13/2 orbital. © 1995 The American Physical Society.
- Published
- 1995