Manifestation of shell structure in the characteristics of the products of the reaction Zn+Sn

We report measurements of the yield of products as a function of their mass and total kinetic energy (TKE) in reactions induced by /sup 64/Zn ions in targets of silver, tin, and lanthanum at various beam energies above the Coulomb barrier. In the dependences presented for reactions with magic nuclei of tin, in contrast to those measured in other targets, a yield of projectile-like and target-like products is observed at TKE values less than the entrance Coulomb barrier. The observed properties of the spectrum shapes can be associated with the structure of the interacting nuclei, specifically with the /ital Z/=50 shell of tin nuclei, which is responsible for preserving the individual properties of the target nuclei.