Shape changes and alignment properties in /sup 77/Kr

Journal Article · Tue Dec 01 04:00:00 EST 1987 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.36.2601· OSTI ID:5740294

Gross, C J; Cottle, P D; Headly, D M; Huettmeier, U J; Moore, E F; Tabor, S L; Nazarewicz, W

Excited positive parity states up to spin ((41/2) have been studied in /sup 77/Kr using a 98 MeV /sup 28/Si beam on a natural chromium target. ..delta..J = 1 transitions have been identified throughout the positive parity band. The energies, mixing ratios, and B(M1) transition rates for these transitions alternate in size as the spin increases. A cranked shell model analysis was performed along with Strutinsky-Bogolyubov cranking calculations. The observed decrease in the signature splitting of the ..nu..g/sub 9/2/ band has been attributed to a band crossing due to an aligning pair of g/sub 9/2/ protons. Prolate quadrupole deformations of ..beta../sub 2/ = 0.34 for the one-quasiparticle band and ..beta../sub 2/ = 0.26 for the three-quasiparticle band are predicted. This band crossing is associated with a shape change caused by the polarization effect of aligned quasiparticles.

• Research Organization: Department of Physics, Florida State University, Tallahassee, Florida 32306
• OSTI ID: 5740294
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 36:6; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
CHROMIUM
COMPOUND-NUCLEUS REACTIONS
CRANKING MODEL
DATA
DEFORMED NUCLEI
DISTRIBUTION
ELEMENTS
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
HEAVY ION REACTIONS
HIGH SPIN STATES
HOURS LIVING RADIOISOTOPES
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
KRYPTON 77
KRYPTON ISOTOPES
M1-TRANSITIONS
MATHEMATICAL MODELS
METALS
MEV RANGE
MEV RANGE 10-100
MIXING RATIO
MULTIPOLE TRANSITIONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
PARITY
PARTICLE PROPERTIES
RADIOISOTOPES
SHELL MODELS
SILICON 28 REACTIONS
TRANSITION ELEMENTS