Lifetime measurements in 93Nb from photon and inelastic neutron scattering

被引：7

作者：

Orce, J. N. ^{[1
]}

Fransen, C.

Linnemann, A.

Mckay, C. J.

Lesher, S. R.

Pietralla, N.

Werner, V.

Friessner, G.

Kohstall, C.

Muecher, D.

Pitz, H. H.

Scheck, M.

Scholl, C.

Stedile, F.

Warr, N.

Walter, S.

von Brentano, P.

Kneissl, U.

McEllistrem, M. T.

Yates, S. W.

机构：

[1] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA

[2] Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany

[3] SUNY Stony Brook, Dept Phys & Astron, Nucl Struct Lab, Stony Brook, NY 11794 USA

[4] Univ Stuttgart, Inst Strahlenphys, D-70569 Stuttgart, Germany

[5] Univ Kentucky, Dept Chem, Lexington, KY 40506 USA

来源：

PHYSICAL REVIEW C | 2007年 / 75卷 / 01期

关键词：

D O I：

10.1103/PhysRevC.75.014303

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The low-spin structure of Nb-93 has been studied using the Nb-93(gamma,gamma(')), Nb-93(n,n(')gamma) and Zr-94(p,2n gamma gamma)Nb-93 reactions. Lifetimes were determined from both Nb-93(gamma,gamma(')) and Nb-93(n,n(')gamma) measurements. Branching ratios were measured, and multipolarities and spin assignments were determined from the Zr-94(p,2n gamma gamma)Nb-93 angular correlation experiment. From M1 and E2 strengths, the J(pi)=9/2(+) and 7/2(+) 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(9/2)circle times(2(1,MS)(+),Zr-92) configuration. The large B(M1) values determined in Nb-93 cannot be explained within the weak coupling limit of the interacting boson fermion model.

引用

页数：8

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