Complete and incomplete fusion studies in ⁷Li and ¹⁶O
induced reactions on ⁵¹V by measurement of excitation
functions and recoil ranges

M ISMAIL and R P SHARMA

Variable Energy Cyclotron Centre, I/AF, Bidhan Nagar, Calcutta 700 064, India
Email: ismail@veccal.ernet.in

Abstract:

Excitation function and mean projected recoil ranges of nuclei produced in the ⁷Li and ¹⁶O induced reactions on ⁵¹V target were measured by conventional stacked foil and thick-target thick-recoil-catcher technique for bombarding energies E$\leq$ 50.0 MeV for ⁷Li ions and $E \simeq$ 60.0-96.0 MeV for the ¹⁶O ions. The measured recoil ranges are converted to momentum transfer. The momentum transfer information was used to get clues about some aspects of the interaction such as complete and incomplete fusion reaction mechanism which correspond to full and reduced momentum transfer respectively. The measured excitation functions are compared with the calculation based on the statistical model which describes only equilibrium decay of the compound nucleus using the CASCADE code. The comparison of the CASCADE code with the measured excitation functions for the residue radioisotopes ⁵¹Cr and ⁵⁴Mn for the ⁷Li + ⁵¹V system indicates the reaction mechanisms is complete fusion of ⁷Li with the target nucleus ⁵¹V. Similarly the comparison of the CASCADE code with the measured excitation functions of the residue radioisotopes for the system ¹⁶O + ⁵¹V indicates that the four reaction mechanisms (i) complete fusion of ¹⁶O, (ii) incomplete fusion of ¹²C, (iii) incomplete fusion of ⁸Be and (iv) incomplete fusion of ⁴He respectively with the target might be contributing to reaction cross sections.

keywords : ⁷Li and ¹⁶O induced reactions on ⁵¹V; stacked foil technique; complete and incomplete fusion; CASCADE code.

pacs : 25.70; 24.10

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