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The region around neutron number N = 60 in the neutron-rich Sr and Zr nucleiis one of the most dramatic examples of a ground state shape transition from(near) spherical below N = 60 to strongly deformed shapes in the heavierisotopes. The single-particle structure of 95-97Sr approaching the ground stateshape transition at 98 Sr has been investigated via single-neutron transferreactions using the (d, p) reaction in inverse kinematics. These reactionsselectively populate states with a large overlap of the projectile ground statecoupled to a neutron in a single-particle orbital. Radioactive 94,95,96Srnuclei with energies of 5.5 AMeV were used to bombard a CD 2 target. Recoilinglight charged particles and {\gamma} rays were detected using a quasi-4{\pi}silicon strip detector array and a 12 element Ge array. The excitation energyof states populated was reconstructed employing the missing mass methodcombined with {\gamma}-ray tagging and differential cross sections for finalstates were extracted. A reaction model analysis of the angular distributionsallowed for firm spin assignments to be made for the low-lying 352, 556 and 681keV excited states in 95Sr and a constraint has been placed on the spin of thehigher-lying 1666 keV state. Angular distributions have been extracted for 10states populated in the d(95Sr,p)96Sr reaction, and constraints have beenprovided for the spins and parities of several final states. Results arecompared to shell model calculations in several model spaces and the structureof low-lying states in 94Sr and 95Sr is well-described. The spectroscopicstrength of the 0+ and 2 states in 96Sr is significantly more fragmented thanpredicted.

Single-Particle Structure of Neutron-Rich Sr Isotopes Via d( 94,95,96 Sr, p) Reactions