Superdeformation and smooth band termination in A{approx}60 nuclei

Journal Article · Mon Dec 21 04:00:00 EST 1998 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.57338· OSTI ID:21207783

Svensson, C E ^[1]

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1. Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, L8S 4M1 (Canada)

High-spin states in the proton-rich nuclei {sup 62}Zn and {sup 60}Zn have been studied with Gammasphere and the Microball charged-particle detector array. Two sets of strongly coupled rotational bands in {sup 62}Zn have been observed up to the terminating states of their respective configurations and lifetime measurements for these bands confirm the predicted loss of collectivity associated with the smooth termination of rotational bands. Superdeformed (SD) bands have been observed in both {sup 62}Zn and {sup 60}Zn, establishing a new region of superdeformation for nuclei with particle numbers N,Z{approx_equal}30. Linking transitions connecting the doubly-magic SD band in {sup 60}Zn to the yrast line have been identified. These linking transitions not only provide the first spin, parity, and excitation energy measurements for SD states in the A{approx}60 mass region, but their stretched E2 character and relatively large B(E2) values and intensities suggest that the decay-out process for A{approx}60 SD bands differs substantially from that observed in heavier systems.

• OSTI ID: 21207783
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 455; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGED PARTICLE DETECTION
E2-TRANSITIONS
EXCITATION
GAMMA DETECTION
GAMMA SPECTRA
HIGH SPIN STATES
LIFETIME
MAGIC NUCLEI
NEUTRON-DEFICIENT ISOTOPES
NUCLEAR STRUCTURE
PARITY
PROTONS
ROTATIONAL STATES
SPIN
SUPERDEFORMED NUCLEI
YRAST STATES
ZINC 60
ZINC 62