Test of the triaxial rotor model and the interacting boson-fermion approximation model description of collective states in /sup 193/Ir

Journal Article · Sun Mar 01 00:00:00 EST 1987 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.35.968· OSTI ID:6836582

McGowan, F K; Johnson, N R; Lee, I Y; Milner, W T; Roulet, C; Diamond, R M; Stephens, F S; Guidry, M W

Coulomb excitation of states in /sup 193/Ir up to J = (21/2) has been observed with 160-MeV /sup 40/Ar and 617-MeV /sup 136/Xe ions. Most of these states are grouped into three rotational-like bands based on the (3/2)/sup +/ ground state, the (1/2)/sup +/ first excited state, and the (7/2)/sup +/ ..gamma..-vibrational-like state at 621 keV. The average deviation between experimental and theoretical energies for 18 states is 54 keV for the particle-asymmetric-rigid-rotor model and 66 keV for the interacting boson-fermion approximation model (limited to broken Spin(6) symmetry and only the d/sub 3/2/ orbital is considered). The overall agreement of both model predictions with experimental ..gamma..-ray yields for the collective transitions within the (3/2)/sup +/ band is quite good.

• Research Organization: Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
• DOE Contract Number: AC05-84OR21400; AS05-76ER04936; AC03-76SF00098
• OSTI ID: 6836582
• Journal Information: Phys. Rev. C; (United States), Vol. 35:3
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ARGON 40 REACTIONS
COULOMB EXCITATION
IRIDIUM 193
ENERGY LEVELS
IRIDIUM 193 TARGET
XENON 136 REACTIONS
COINCIDENCE SPECTROMETRY
COLLECTIVE MODEL
E2-TRANSITIONS
FERMIONS
GAMMA SPECTRA
INTERACTING BOSON MODEL
MEV RANGE 100-1000
ORNL ISOCHRONOUS CYCLOTRON
PARITY
ROTATIONAL STATES
SPIN
SUPERSYMMETRY
SYMMETRY BREAKING
VIBRATIONAL STATES
ACCELERATORS
ANGULAR MOMENTUM
CHARGED-PARTICLE REACTIONS
CYCLIC ACCELERATORS
CYCLOTRONS
DAYS LIVING RADIOISOTOPES
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITED STATES
HEAVY ION REACTIONS
HEAVY NUCLEI
IRIDIUM ISOTOPES
ISOCHRONOUS CYCLOTRONS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MATHEMATICAL MODELS
MEV RANGE
MULTIPOLE TRANSITIONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
ODD-EVEN NUCLEI
PARTICLE PROPERTIES
RADIOISOTOPES
SHELL MODELS
SPECTRA
STABLE ISOTOPES
SYMMETRY
TARGETS
651920* - Nuclear Properties & Reactions
A=190-219
Experimental