TY  - JOUR
AU  - Zheng, Y. et al
AU  - Gadea, A.
PY  - 2013
DA  - 2013//
TI  - gamma-ray linear polarization measurements and (g(9/2))(-3) neutron alignment in Ru-91
T2  - Phys. Rev. C
JO  - Physical Review C
SP  - 044328
EP  - 10pp
VL  - 87
IS  - 4
PB  - Amer Physical Soc
AB  - 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.
SN  - 0556-2813
UR  - http://arxiv.org/abs/1304.3287
UR  - https://doi.org/10.1103/PhysRevC.87.044328
DO  - 10.1103/PhysRevC.87.044328
LA  - English
N1  - WOS:000317866200004
ID  - Zheng+Gadea2013
ER  -