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Magnetic moment of the 13/2(+) isomeric state in Cu-69: Spin alignment in the one-nucleon removal reaction

2016    Kusoglu, A.; Georgiev, G.; Sotty, C.; Balabanski, D. L.; Goasduff, A.; Ishii, Y.; Abe, Y.; Asahi, K.; Bostan, M.; Chevrier, R.; Chikamori, M.; Daugas, J. M.; Furukawa, T.; Nishibata, H.; Ichikawa, Y.; Ishibashi, Y.; Lozeva, R.; Miyatake, H.; Nagae, D.; Nanao, T.; Nanao, T.

We report on a new measurement of the g factor of the (13/2(+)) isomeric state in the neutron-rich nucleus Cu-69. This study demonstrates the possibility of obtaining considerable nuclear spin alignment for multi-quasiparticle states in single-nucleon removal reactions. The time-dependent perturbed angular distribution (TDPAD) method was used to extract the gyromagnetic factor of the (13/2(+)) [T-1/2 = 351(14) ns] isomeric state of Cu-69. Its g factor was obtained as g(13/2(+)) = 0.248( 9). The experimentally observed spin alignment for the state of interest was deduced as A = -3.3(9)%.