Single proton structure of /sup 193,195,197/Ir and perturbed spin(6) symmetry

Journal Article · Tue Mar 01 00:00:00 EST 1983 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.27.1040· OSTI ID:6081107

Cizewski, J A; Burke, D G; Flynn, E R; Brown, R E; Sunier, J W

The /sup 194,196,198/Pt (t,..cap alpha..) /sup 193,195,197/Ir reactions have been studied with a 17 MeV polarized triton beam. Based on the measured angular distributions of cross sections and analyzing powers, several new I/sup ..pi../ assignments were made in /sup 195/Ir and new levels were identified in /sup 197/Ir. The change in the distribution of d/sub 3/2/ spectroscopic strength as a function of neutron number is observed to be quite dramatic. Two large fragments are observed in /sup 193/Ir, all of the d/sub 3/2/ strength is concentrated in the ground state of /sup 197/Ir, and /sup 195/Ir shows a situation intermediate between these two. The empirical d/sub 3/2/ strength in /sup 193/Ir is well reproduced by the predictions of the U(6/4) supersymmetry proposed for the Os-Ir-Pt nuclei. The change in the d/sub 3/2/ strength as a function of neutron number is well reproduced by a perturbation of this symmetry.

• Research Organization: A. W. Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06511
• OSTI ID: 6081107
• Journal Information: Phys. Rev. C; (United States), Vol. 27:3
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
IRIDIUM ISOTOPES
ENERGY LEVELS
PLATINUM ISOTOPES
TRITON REACTIONS
PICKUP REACTIONS
ALPHA PARTICLES
ANALYZING POWER
ANGULAR DISTRIBUTION
CROSS SECTIONS
MEV RANGE 10-100
PERTURBATION THEORY
POLARIZED BEAMS
SINGLE-PARTICLE MODEL
SU-6 GROUPS
SUPERSYMMETRY
BEAMS
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
DIRECT REACTIONS
DISTRIBUTION
ENERGY RANGE
ISOTOPES
LIE GROUPS
MATHEMATICAL MODELS
MEV RANGE
NUCLEAR REACTIONS
PARTICLE MODELS
SU GROUPS
SYMMETRY
SYMMETRY GROUPS
TRANSFER REACTIONS
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