$^{89}$Zr(n,$\gamma )^{90}$Zr from a surrogate reaction approach

While recent studies have demonstrated the validity of the surrogate reaction approach for studying fission cross sections of short-lived actinides, its applicability for (n,$\gamma )$ is still under investigation. We studied the $\gamma $-decay of $^{90}$Zr produced by $^{91}$Zr(p,d) and $^{92}$Zr(p,t) in order to infer the $^{89}$Zr(n,$\gamma )$ cross sections. The experiments were carried out at the K150 Cyclotron facility at Texas A{\&}M University with a 28.5-MeV proton beam. The reaction deuterons and tritons were measured at forward angles of 30-60$^{\circ}$ with the STARS (Silicon Telescope Array for Reaction Studies) array of three segmented Micron S2 silicon detectors. Compound nuclei with energies up to a few MeV above the neutron separation thresholds were populated. The coincident $\gamma $-rays were measured with the LiTeR (Livermore Texas Richmond) array of five Compton-suppressed HPGe clovers. We will present results of $\gamma $-emission probabilities of $^{89}$Zr(n,$\gamma )$ and some theoretical discussions.