Complex band structure in neutron-deficient Hg-178 - art. no. 011303

Kondev, FG Carpenter, MP Janssens, RVF Wiedenhover, I Alcorta, M Bhattacharyya, P Brown, LT Davids, CN Fischer, SM Khoo, TL Lauritsen, T Lister, CJ Nouicer, R Reviol, W Riedinger, LL Seweryniak, D Siem, S Sonzogni, AA Uusitalo, J Woods, PJ

Fg. Kondev et al., Complex band structure in neutron-deficient Hg-178 - art. no. 011303, PHYS REV C, 6101(1), 2000, pp. 1303

28

INGLESE

Article

Physics

PHYSICAL REVIEW C-NUCLEAR PHYSICS

0556-2813 → ACNP

6101

1

2000

ISI

0556-2813(200001)6101:1<1303:CBSINH>2.0.ZU;2-S

Using the GAMMASPHERE array in conjunction with the Fragment Mass Analyzer, the level structure of the near drip-line nucleus Hg-178 has been consider ably expanded with the recoil-decay tagging technique. Of particular intere st is a new rotational band which exhibits a complex decay towards the low spin states arising from both the prolate-deformed and the nearly spherical coexisting minima. It is proposed that this band is associated at low spin with an octupole vibration which is crossed at moderate frequency by a sha pe driving, two quasiproton excitation.