MEASUREMENT OF EXCITATION-FUNCTIONS AND MEAN PROJECTED RECOIL RANGES OF NUCLEI IN C-12-INDUCED REACTIONS ON VANADIUM

Excitation function and mean projected recoil ranges of nuclei produce d in the C-12-induced reactions on V-51 target were measured by conven tional stacked foil and thick-target thick-recoil-catcher technique fo r bombarding energies E less than or equal to 84 MeV for C-12 ion beam . The measured recoil ranges are converted to momentum transfer. Infor mation on momentum transfer was used to get clues about some aspects o f the interaction such as complete fusion which corresponds to full mo mentum transfer and incomplete fusion reaction mechanism. The measured excitation functions are compared with the calculation based on the s tatistical model which describes only equilibrium decay of the compoun d nucleus using the Cascade code and the geometry dependent hybrid mod el which describes equilibrium as well as pre-equilibrium decay of the compound nucleus using the Alice/91 code. The measured excitation fun ctions and average ranges of the radioisotope products of the reaction s C-12 on V-51 indicate that the three separate reaction mechanisms co uld be attributable to complete fusion of C-12, incomplete fusion of B e-8 and incomplete fusion of He-4 respectively with the target. The Be -8 and He-4 are the break-up component of C-12 into Be-8+He-4. The pre dictions of the codes, especially the Cascade, generally agree with th e measured cross-sections which could be attributed to complete fusion of C-12 with the target V-51.