High-spin levels in /sup 191/Pt and /sup 193/Pt and the triaxial rotor model

Journal Article · Sat Jan 01 04:00:00 EST 1977 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.15.94· OSTI ID:7320857

Saha, S K; Piiparinen, M; Cunnane, J C; Daly, P J; Dors, C L; Khoo, T L; Bernthal, F M

The high-spin level structures of the transitional nuclei /sup 191/Pt and /sup 193/Pt have been studied by (..cap alpha..,3n..gamma..) reactions on enriched Os targets. The measurements included ..gamma..-ray singles, comprehensive ..gamma..-..gamma.. coincidences, half-life determinations, and ..gamma..-ray angular distributions. The extensive /sup 191/Pt and /sup 193/Pt level schemes established are reported here. In both nuclei, decoupled ..nu..i/sub 13///sub 2/ /sup -1/ bands, strongly resembling the ground bands of the adjacent core nuclei, and many other high-spin positive parity states have been located. Low-lying 21/2/sup -/ bands have also been observed in both nuclei and they are described as semidecoupled bands with microscopic structures dominated by three-quasiparticle components of the type (..nu..i/sub 13///sub 2/ /sup -2/,..nu..j/sup -1/). The abundant information about ..nu..i/sub 13///sub 2/ level families obtained in these experiments and in a complementary /sup 191/Au decay study is discussed, and it is shown that these complex level spectra can be accounted for rather well in terms of the coupling of an i/sub 13///sub 2/ neutron hole to a triaxially deformed core. (AIP)

• Research Organization: Chemistry Department, Purdue University, West Lafayette, Indiana 47907
• OSTI ID: 7320857
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 15:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

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A=190-219
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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA REACTIONS
ANGULAR DISTRIBUTION
BARYONS
BETA DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
COMPOUND-NUCLEUS REACTIONS
DAYS LIVING RADIOISOTOPES
DISTRIBUTION
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FERMIONS
HADRONS
HALF-LIFE
HEAVY NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MEV RANGE
MEV RANGE 10-100
MINUTES LIVING RADIOISOTOPES
NEUTRONS
NUCLEAR REACTIONS
NUCLEAR STRUCTURE
NUCLEI
NUCLEONS
OSMIUM 190
OSMIUM 192
OSMIUM ISOTOPES
PLATINUM 191
PLATINUM 193
PLATINUM ISOTOPES
RADIOISOTOPES
STABLE ISOTOPES
YEARS LIVING RADIOISOTOPES