Abstract
The reactions 119 Sn(t, p) 121 Sn and 120 Sn(t, d) 121 Sn have been studied at 13 MeV bombarding energy with energy resolutions of 15 keV and 11 keV, respectively. Angular distributions were measured from 12° to 66° in 6° steps and values of the transferred orbital angular momentum were derived. In the (t, d) case, spectroscopic factors are presented. Considerable f-strength from the (t, d) reaction is found near 2.5 MeV, which is about 2 MeV lower than expected from the single-particle model. One- and three-quasiparticle components of the 121 Sn states are examined in some detail. It is concluded that in spite of considerable mixing, the low-lying levels seem amenable to a core-particle description.
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