High-spin states and band structure in /sup 76/Se

Journal Article · Mon Sep 01 04:00:00 EDT 1980 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.22.1126· OSTI ID:5188397

Wells, Jr, J C; Robinson, R L; Kim, H J; Sayer, R O; Piercey, R B; Ramayya, A V; Hamilton, J H; Maguire, C F

High-spin states of /sup 76/Se have been investigated through observations of ..gamma.. rays produced in the /sup 71/Ga(/sup 7/Li,2n) reaction by bombarding an enriched /sup 71/Ga target with 15- to 22-MeV /sup 7/Li ions. Measurements were made of ..gamma..-ray singles and ..gamma..-..gamma.. coincidence spectra, excitation functions, ..gamma..-ray angular distributions, ..gamma..-..gamma.. angular correlations, and Doppler broadening of photopeaks. Level energies, decay modes, spins and parities, ..gamma..-ray branching ratios, ..gamma..-ray radiative admixtures, and lifetimes were deduced. There is evidence for a strongly excited quasirotational band with the highest member observed being a 12/sup +/ state at 5432 keV, for an odd-parity band built on a 5/sup -/ state, and for a ..delta..J=1 band which has the characteristics of a ..gamma..-vibrational band in a deformed nucleus. Interacting boson approximation model calculations are compared with the experimental results.

• Research Organization: Physics Department, Tennessee Technological University, Cookeville, Tennessee 38501
• OSTI ID: 5188397
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 22:3; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
BARYONS
BRANCHING RATIO
CHARGED-PARTICLE REACTIONS
COINCIDENCE SPECTROMETRY
COMPOUND-NUCLEUS REACTIONS
CROSS SECTIONS
DEFORMED NUCLEI
DISTRIBUTION
ELECTROSTATIC ACCELERATORS
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EXCITATION FUNCTIONS
FERMIONS
GALLIUM 71 TARGET
GAMMA SPECTRA
HADRONS
HEAVY ION REACTIONS
HIGH SPIN STATES
INTERACTING BOSON MODEL
INTERMEDIATE MASS NUCLEI
ISOTOPES
LIFETIME
LITHIUM 7 REACTIONS
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
NEUTRONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEAR STRUCTURE
NUCLEI
NUCLEONS
PARITY
PARTICLE PROPERTIES
SELENIUM 76
SELENIUM ISOTOPES
SHELL MODELS
SPECTRA
SPIN
STABLE ISOTOPES
TARGETS
VAN DE GRAAFF ACCELERATORS