Lifetime measurements inNb93from photon and inelastic neutron scattering

Autor:	C. J. McKay, H. H. Pitz, J. N. Orce, Stephen D. Walter, D. Mücher, S. R. Lesher, V. Werner, A. Linnemann, S. W. Yates, F. Stedile, C. Fransen, Marcus Scheck, N. Warr, C. Scholl, P. von Brentano, G. Friessner, Norbert Pietralla, U. Kneissl, Christoph Kohstall, M. T. McEllistrem
Rok vydání:	2007
Předmět:	Physics Mass number Nuclear and High Energy Physics Crystallography Branching fraction Neutron diffraction Neutron Fermion Inelastic scattering Interacting boson model Atomic physics Inelastic neutron scattering
Zdroj:	Physical Review C. 75
ISSN:	1089-490X 0556-2813
DOI:	10.1103/physrevc.75.014303
Popis:	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.
Databáze:	OpenAIRE
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