In-beam. gamma. -ray spectroscopy of excited states in /sup 141/Pm

Journal Article · Sun Dec 01 04:00:00 EST 1985 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.32.1855· OSTI ID:6385879

Aryaeinejad, R; Walker, P M; Firestone, R B; McHarris, W C

The level structure of the N = 80 nucleus /sup 141/Pm has been studied in-beam by the /sup 142/Nd(p,2n..gamma..)/sup 141/Pm reaction using a 25-MeV p beam and by the /sup 141/Pr(..cap alpha..,4n..gamma..)/sup 141/Pm reaction using a 47-MeV ..cap alpha.. beam. ..gamma..-ray singles, ..gamma..-..gamma.. coincidence (both prompt and delayed), and angular distribution experiments were performed. We found 42 ..gamma.. rays deexciting 28 states in /sup 141/Pm from the (p,2n..gamma..) reaction and 34 ..gamma.. rays deexciting 22 (generally higher-spin) states from the (..cap alpha..,4n..gamma..) reaction, for a total of 35 known states in /sup 141/Pm. These in-beam experiments, taken together with the results from /sup 141/Sm/sup m/+g decay, yield J/sup ..pi../ assignments for most of the states and have allowed us to deduce the configurations for many of the states. The structures are discussed in terms of single-quasiparticle shell-model and triaxial weak-coupled collective states and are compared with systematics for this nuclear region.

• Research Organization: National Superconducting Cyclotron Laboratory and Departments of Chemistry and Physics, Michigan State University, East Lansing, Michigan 48824
• OSTI ID: 6385879
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 32:6; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
BARYON REACTIONS
BARYONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
COINCIDENCE SPECTROMETRY
COMPOUND-NUCLEUS REACTIONS
CYCLIC ACCELERATORS
CYCLOTRONS
DATA
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
GAMMA SPECTROSCOPY
HADRON REACTIONS
HADRONS
HALF-LIFE
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOCHRONOUS CYCLOTRONS
ISOTOPES
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
MINUTES LIVING RADIOISOTOPES
MSU CYCLOTRONS
NEODYMIUM 142 TARGET
NEUTRONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
NUMERICAL DATA
ODD-EVEN NUCLEI
PARITY
PARTICLE PROPERTIES
PROMETHIUM 141
PROMETHIUM ISOTOPES
PROTON REACTIONS
QUASI PARTICLES
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
SHELL MODELS
SPECTROSCOPY
SPIN
TARGETS