Nuclear Spectroscopy ofCu62withCu63(d,t)andZn64(d,α)Reactions

The level structure of ${}_{}{}^{62}{}_{}{}^{}\mathrm{Cu}$ was studied by the reaction ${}_{}{}^{63}{}_{}{}^{}\mathrm{Cu}(d,t){}_{}{}^{62}{}_{}{}^{}\mathrm{Cu}$ (at $E_d=16\mathrm{} \mathrm{and} 12$ MeV), by ${}_{}{}^{63}{}_{}{}^{}\mathrm{Cu}({}_{}{}^3{}_{}{}^{}\mathrm{He},\alpha ){}_{}{}^{62}{}_{}{}^{}\mathrm{Cu}$ and ${}_{}{}^{62}{}_{}{}^{}\mathrm{Ni}({}_{}{}^3{}_{}{}^{}\mathrm{He},t){}_{}{}^{62}{}_{}{}^{}\mathrm{Cu}$ (at $E_{{}_{}{}^3{}_{}{}^{}\mathrm{He}}=18\mathrm{}$ MeV), and by ${}_{}{}^{64}{}_{}{}^{}\mathrm{Zn}(d,\alpha ){}_{}{}^{62}{}_{}{}^{}\mathrm{Cu}$ (at $E_d=12.08\mathrm{}$ MeV). Experimental resolution varied between 7-9 keV (for $d,t$) and 12-15 keV (for experiments involving charge-two projectiles). Angular distributions were obtained for the ($d,t$) and ($d,\alpha$) reactions for the ${15}^{\circ }\ge {\theta }_L\ge {45}^{\circ }$ and ${12}^{\circ }\ge {\theta }_L\ge {90}^{\circ }$, respectively, and spectroscopic factors and $L$ transfers were extracted by distorted-wave Born-approximation (DWBA) analyses for about 60 states below 3 MeV excitation. About half of these levels had not been studied previously. In spite of the relatively low deuteron energy most ($d,\alpha$) angular distributions showed systematic direct-reaction structure and were well fitted by DWBA calculations without variable parameters. A number of unique $J^{\pi }=1^{+}$ and $J^{\pi }=3^{+}$ assignments could be made. Narrow $J^{\pi }$ limits are given for most other levels. No states with $J>\mathrm{}5\mathrm{}$ were identified in the energy region investigated.