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

Journal Article · Tue Dec 01 04:00:00 EST 1998 · AIP Conference Proceedings

OSTI ID:365847

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}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{approximately}60 mass region, but their stretched E2 character and relatively large B(E2) values and intensities suggest that the decay-out process for A{approximately}60thinspSD bands differs substantially from that observed in heavier systems. {copyright} {ital 1998 American Institute of Physics.}

• Research Organization: Lawrence Berkeley National Laboratory
• DOE Contract Number: AC03-76SF00098; AC05-96OR22464; FG02-88ER40406; FG05-93ER40770; W-31109-ENG-38
• OSTI ID: 365847
• Report Number(s): CONF-980672--
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 455; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CALCIUM 40 REACTIONS
DEFORMED NUCLEI
E2-TRANSITIONS
ENERGY LEVELS
HEAVY ION FUSION REACTIONS
HIGH SPIN STATES
NUCLEAR DEFORMATION
ROTATIONAL STATES
SILICON 28 TARGET
ZINC
ZINC 60
ZINC 62