ONSET OF COLLECTIVITY IN NEUTRON-DEFICIENT PO-196,PO-198

Authors
BERNSTEIN LA CIZEWSKI JA JIN HQ YOUNES W HENRY RG FARRIS LP CHAROS A CARPENTER MP JANSSENS RVF 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 JRB BURDE J FALLON P DUYAR C DRAPER JE RUBEL E VO DT
Citation
La. Bernstein et al., ONSET OF COLLECTIVITY IN NEUTRON-DEFICIENT PO-196,PO-198, Physical review. C. Nuclear physics, 52(2), 1995, pp. 621-627
Citations number
16
Categorie Soggetti
Physics, Nuclear
Journal title
Physical review. C. Nuclear physics → ACNP
ISSN journal
05562813
Volume
52
Issue
2
Year of publication
1995
Pages
621 - 627
Database
ISI
SICI code
0556-2813(1995)52:2<621:OOCINP>2.0.ZU;2-X
Abstract
We have studied via in-beam gamma-ray spectroscopy Po-196 and Po-198, which are the first neutron-deficient Po isotopes to exhibit a collect ive low-lying structure. The ratios of yrast state energies and the E2 branching ratios of transitions from non-yrast to yrast states are in dicative of a low-lying vibrational structure. The onset of collective motion in these isotopes can be attributed to the opening of the neut ron i(13/2) orbital at N approximate to 112 and the resulting large ov erlap between the two valence protons in the h(9/2) orbital and the va lence neutrons in the i(13/2) orbital.