Isotopic dependence of fusion cross-sections - linear relationships
Rajeev K. Puri - Manoj K. Sharma - Raj K. Gupta
Centre of Advanced Study in Physics, Panjab University, Chandigarh 160014, India
Received: 27 February 1998 / Revised version: 22 May 1998 Communicated by P. Schuck
Abstract
A systematic study of isotopic dependence of fusion cross-section is carried out
by adding neutrons gradually to N=Z colliding nuclei. We find that fusion barrier position
increases and height decreases, both linearly with the increase of N/Z ratio of
the compound system. The increase in barrier position is larger compared
to decrease in barrier height. In terms of these linear relationships, a
parameterized form of fusion cross-sections is given for the neutron-rich
colliding nuclei. The fusion cross-sections are also enhanced
linearly with the N/Z ratio, and this enhancement is larger for lower incident
centre-of-mass energies and independent of the choice of reaction partners.
Experimental data and other theoretical studies are called for to verify
these results.
PACS
24.10.-i Nuclear-reaction models and methods -
25.70.-z Low and intermediate energy heavy-ion reactions -
25.70.Jj Fusion and fusion-fission reactions -
25.60.Pj Fusion reactions
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