States in 174Lu populated by single-particle transfer reactions

Abstract

Abstract The nuclear structure of the doubly odd nucleus 174 Lu has been investigated using the following four single-particle transfer reactions: {173}Yb(α, t) 174 Lu, 173 Yb( 3 He, d) 174 Lu, 175 Lu( 3 He, α) 174 Lu and 175 Lu(d,t) 174 Lu. Beams of 24 MeV 3 He particles, 28.5 MeV α-particles and 12 MeV deuterons were used. The reaction products were analysed in an Enge split-pole magnetic spectrograph. The proton transfer data have enabled the assignment of the 1 2 − [541], 5 2 + [402], 9 2 − [514] and the 1 2 − [530] proton orbitals coupled to the 5 2 − [512] neutron in both spin triplet and singlet configurations. Strong Coriolis coupling has been observed in bands formed by the transfer of the 1 2 − [541] and the 1 2 − [530] protons. The neutron-transfer data have been used to confirm previous assignments of the 5 2 − [512], 1 2 − [521] and 3 2 − [521] neutron orbitals coupled to the 7 2 + [404] proton. The observation of levels populated by high- l transfers in the ( 3 He, α) reaction has led to a revised assignment of the K π = 7 + , 7 2 + [633] n + 7 2 + [404] p rotational band. Similarly the spin-triplet K π = 0 + configuration of these two orbitals has also been identified.