Evidence Of Narrow Range High Spin Population In Incomplete Fusion

Particle (p, alpha)-gamma-coincidence experiment has been performed to probe incomplete fusion dynamics in the C-12+Tm-169 system at 5-7.5 MeV/A. Spin distributions of different reaction products populated via xn and alpha/2 alpha xn channels have been measured to acquire information about the involved reaction mechanism on the basis of their experimentally observed de-excitation patterns. The spin distributions of direct-alpha (incomplete fusion) and fusion-evaporation (complete fusion) channels are found to be distinct from each other, substantiating their origin in entirely different reaction dynamics. It has been found that CF products span a broad spin range, while ICF products are confined to a narrow spin range localized in the higher spin states. Findings of the present work comprehensively demonstrate that incomplete fusion reactions can be used as a sensitive tool to populate high-spin states in final reaction products, which are not otherwise accessible.