High-resolution study of the Sn-116(p,t) reaction and shell model structure of Sn-114

The Sn-116(p, t) Sn-114 reaction has been studied in a high-resolution experiment at an incident proton energy of 26 MeV. Angular distributions for 61 transitions to levels of Sn-114 up to an excitation energy of similar to4.1 MeV have been measured. A distorted-wave Born approximation analysis of experimental angular distributions using conventional Woods-Saxon potentials has been done, allowing,either the confirmation of previous spin and parity values or the assignment of new spin and parity to a large number of Sn-114 states. A shell-model study of Sn-114 has been performed using a realistic effective interaction derived from the CD-Bonn nucleon-nucleon potential. The model space has been truncated to states with seniority up to 4. Comparison between the, experimental and calculated energy spectra for both positive- and negative-parity states shows a quite satisfactory agreement