Shape changes in [sup 79]Kr

Journal Article · Thu Dec 01 04:00:00 EST 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.50.2786· OSTI ID:6806057

Johns, G D; Doering, J; Holcomb, J W; Johnson, T D; Riley, M A; Sylvan, G N; Womble, P C; Wood, V A; Tabor, S L ^[1]

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1. Department of Physics, Florida State University, Tallahassee, Florida 32306 (United States)

High-spin states in [sup 79]Kr were studied using the [sup 65]Cu([sup 18]O,[ital p]3[ital n]) reaction at 65 MeV at the Florida State University Tandem-LINAC facility. Prompt [gamma]-[gamma] coincidences were observed using the Pitt-FSU detector array. Twelve new states were found, along with 19 new transitions. The yrast positive- and negative-parity bands were extended up to spins of (45/2[sup +]) and (31/2[sup [minus]]), respectively. Spin assignments were made based on directional correlation of oriented nuclei ratios whenever possible. A cranked-shell-model analysis shows some indication for a second band crossing in the positive-parity band at [h bar][omega][approx]0.75 MeV. This crossing, probably due to an aligned [ital g][sub 9/2] neutron pair, occurs with a much larger band interaction than the first [ital g][sub 9/2] proton crossing. An increase in signature splitting above [h bar][omega][approx]0.75 MeV and a return of large alternations in the [ital B]([ital M]1)/[ital B]([ital E]2) ratio is consistent with the theoretically predicted return to a nearly oblate shape.

• OSTI ID: 6806057
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 50:6; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663110 -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
663220* -- Electromagnetic Transitions-- (1992-)
663450 -- Heavy-Ion-Induced Reactions & Scattering-- (1992-)
663550 -- Nuclear Mass Ranges-- A=59-89-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
COPPER 65 TARGET
CRANKING MODEL
DAYS LIVING RADIOISOTOPES
DEFORMATION
ELECTRON CAPTURE RADIOISOTOPES
ENERGY LEVELS
ENERGY RANGE
EVEN-ODD NUCLEI
GAMMA SPECTRA
HEAVY ION REACTIONS
HIGH SPIN STATES
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KRYPTON 79
KRYPTON IS
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
NUCLEAR DEFORMATION
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
OXYGEN 18 REACTIONS
RADIOISOTOPES
SPECTRA
TARGETS