- Main
Onset of collectivity in neutron deficient 196,198Po.
- 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;
- Vo, DT
- et al.
Published Web Location
https://doi.org/10.1103/physrevc.52.621Abstract
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.
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