%0 Journal Article
%T gamma-ray linear polarization measurements and (g(9/2))(-3) neutron alignment in Ru-91
%A Zheng, Y. et al
%A Gadea, A.
%J Physical Review C
%D 2013
%V 87
%N 4
%I Amer Physical Soc
%@ 0556-2813
%G English
%F Zheng+Gadea2013
%O WOS:000317866200004
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1409), last updated on Thu, 23 May 2013 11:11:50 +0000
%X Linear polarization measurements have been performed for gamma rays in Ru-91 produced with the Ni-58(Ar-36,2p1n gamma)Ru-91 reaction at a beam energy of 111 MeV. The EXOGAM Ge clover array has been used to measure the gamma-gamma coincidences, gamma-ray linear polarization, and gamma-ray angular distributions. The polarization sensitivity of the EXOGAM clover detectors acting as Compton polarimeters has been determined in the energy range 0.3-1.3 MeV. Several transitions have been observed for the first time. Measurements of linear polarization and angular distribution have led to the firm assignments of spin differences and parity of high-spin states in Ru-91. More specifically, calculations using a semiempirical shell model were performed to understand the structures of the first and second (21/2(+)) and (17/2(+)) levels. The results are in good agreement with the experimental data, supporting the interpretation of the nonyrast (21/2(+)) and (17/2(+)) states in terms of the J(max) and J(max) – 2 members of the seniority-three nu(g(9/2))(-3) multiplet.
%R 10.1103/PhysRevC.87.044328
%U http://arxiv.org/abs/1304.3287
%U https://doi.org/10.1103/PhysRevC.87.044328
%P 044328-10pp