Gan, L., Sun, H. B., Li, Z. H., Hu, S. P., Li, Y. J., Su, J., Guo, B., Yan, S. Q., Wang, Y. B., Zeng, S., Han, Z. Y., Li, X. Y., Li, D. H., Ma, T. L., Shen, Y. P., Su, Y., Li, E. T., and Liu, W. P.
Enriched targets of 116,118,120,122,124SnO2 were bombarded with proton and deuteron beams, and the angular distributions of (p,d) and (d,p) on tin isotopes were accurately measured using the high-precision Q3D magnetic spectrograph at the Beijing HI-13 tandem accelerator of the China Institute of Atomic Energy. Distorted-wave Born approximation calculations were performed to extract the neutron spectroscopic factors (SFs) using two different sets of systematic optical potential parameters for these neutron transfer reactions. The SFs of 116-125Sn were obtained and compared to previous values. Our results are consistent with the average of the previous data within the error range. It is worth noting that the reaction products corresponding to 119SnG.S. and 119Sn*0.024, to 123SnG.S. and 123Sn*0.025, and to 125SnG.S. and 125Sn*0.028 were first distinguished by the present experiment; therefore, our results of the low lying states of 119,123,125Sn are more reliable. However, the first excited state of 121Sn is only 0.006 MeV; we failed to identify the products that correspond to the ground state and the first excited state, and the extracted SFs of 120SnG.S.⊗n→121Sn0.006. and 121Sn0.006⊗n→122SnG.S are not reliable. A simple linear formula was used to analyze the relationship of SFs with neutron separation energy Sn(N) and the even-A Sn pairing gap Δ(N), and SFs are found to be positively correlated to Sn(N) and Δ(N). [ABSTRACT FROM AUTHOR]