Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2011-07-29
Phys.Rev.C84:011602,2011
Physics
Nuclear Physics
Nuclear Experiment
5 pages and 5 figures
Scientific paper
10.1103/PhysRevC.84.011602
Quasielastic excitation function measurement has been carried out for the $^{4}$He + $^{232}$Th system at $\theta_{lab}$=160$^\circ$ with respect to the beam direction, to obtain a representation of the fusion barrier distribution. Using the present data along with previously measured barrier distribution results on $^{12}$C, $^{16}$O, and $^{19}$F + $^{232}$Th systems a systematic analysis has been carried out to investigate the role of target and/or projectile structures on fusion barrier distribution. It is observed that for $^{4}$He, $^{12}$C, and $^{16}$O + $^{232}$Th, reactions the couplings due to target states only are required in coupled channel fusion calculations to explain the experimental data, whereas for the $^{19}$F+ $^{232}$Th system along with the coupling of target states, inelastic states of $^{19}$F are also required to explain the experimental results on fusion-barrier distribution. The width of the barrier distribution shows interesting transition behavior when plotted with respect to the target-projectile charge product for the above systems.
Choudhury Kingshuk Roy
Danu L. S.
Gupta Y. K.
John Blakeslee
Kumar Ashok
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