Lifetime measurements in {sup 93}Nb from photon and inelastic neutron scattering
- Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506-0055 (United States)
- Institut fuer Kernphysik, Universitaet zu Koeln, D-50937 Koeln (Germany)
- Institut fuer Strahlenphysik, Universitaet Stuttgart, D-70569 Stuttgart (Germany)
- Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506-0055, USA (United States)
The low-spin structure of {sup 93}Nb has been studied using the {sup 93}Nb({gamma},{gamma}{sup '}), {sup 93}Nb(n,n{sup '}{gamma}) and {sup 94}Zr(p,2n{gamma}{gamma}){sup 93}Nb reactions. Lifetimes were determined from both {sup 93}Nb({gamma},{gamma}{sup '}) and {sup 93}Nb(n,n{sup '}{gamma}) measurements. Branching ratios were measured, and multipolarities and spin assignments were determined from the {sup 94}Zr(p,2n{gamma}{gamma}){sup 93}Nb angular correlation experiment. From M1 and E2 strengths, the J{sup {pi}}=9/2{sup +} and 7/2{sup +} states at 1297.1 keV and 1483.6 keV, respectively, are proposed as members of the quintet of mixed-symmetry states associated with the {pi}1g{sub 9/2}(multiply-in-circle sign)(2{sub 1,MS}{sup +},{sup 92}Zr) configuration. The large B(M1) values determined in {sup 93}Nb cannot be explained within the weak coupling limit of the interacting boson fermion model.
- OSTI ID:
- 20990942
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 75, Issue 1; Other Information: DOI: 10.1103/PhysRevC.75.014303; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ANGULAR CORRELATION
BRANCHING RATIO
COLLECTIVE MODEL
INELASTIC SCATTERING
INTERACTING BOSON MODEL
KEV RANGE
MASS NUMBER
NEUTRON DIFFRACTION
NEUTRON REACTIONS
NEUTRONS
NIOBIUM 93
PHOTON-NUCLEON INTERACTIONS
PHOTONS
PROTON REACTIONS
PROTON-NUCLEON INTERACTIONS
SPIN
VIBRATIONAL STATES
ZIRCONIUM 92
ZIRCONIUM 94