Abstract
The ($p,t$) reaction has been studied on the even stable isotopes of strontium at a proton energy of 31 MeV. Triton spectra were obtained with a magnetic spectrograph which yielded an over-all experimental resolution of 18 keV. The experimental angular distributions are compared with two-nucleon-transfer distorted-wave Born-approximation calculations to make spin-parity assignments for the observed levels and to extract enhancement factors. Energy level and transition intensity systematics are presented for the low-lying levels of these isotopes with particular emphasis on the $L=0$ transitions. A number of new spin-parity assignments are made for $^{86}\mathrm{Sr}$ and $^{84}\mathrm{Sr}$ and the previously unreported level structure of $^{82}\mathrm{Sr}$ is presented. The ground-state mass of $^{82}\mathrm{Sr}$ is also determined from the measured $Q$ values.
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