  The region around neutron number N = 60 in the neutron-rich Sr and Zr nuclei
is one of the most dramatic examples of a ground state shape transition from
(near) spherical below N = 60 to strongly deformed shapes in the heavier
isotopes. The single-particle structure of 95-97Sr approaching the ground state
shape transition at 98 Sr has been investigated via single-neutron transfer
reactions using the (d, p) reaction in inverse kinematics. These reactions
selectively populate states with a large overlap of the projectile ground state
coupled to a neutron in a single-particle orbital. Radioactive 94,95,96Sr
nuclei with energies of 5.5 AMeV were used to bombard a CD 2 target. Recoiling
light charged particles and {\gamma} rays were detected using a quasi-4{\pi}
silicon strip detector array and a 12 element Ge array. The excitation energy
of states populated was reconstructed employing the missing mass method
combined with {\gamma}-ray tagging and differential cross sections for final
states were extracted. A reaction model analysis of the angular distributions
allowed for firm spin assignments to be made for the low-lying 352, 556 and 681
keV excited states in 95Sr and a constraint has been placed on the spin of the
higher-lying 1666 keV state. Angular distributions have been extracted for 10
states populated in the d(95Sr,p)96Sr reaction, and constraints have been
provided for the spins and parities of several final states. Results are
compared to shell model calculations in several model spaces and the structure
of low-lying states in 94Sr and 95Sr is well-described. The spectroscopic
strength of the 0+ and 2 states in 96Sr is significantly more fragmented than
predicted.
