Blurred images of complete fusion and incomplete fusion: Reaction simulation analysis of fission-fragment angular correlations

Abstract

We use Monte Carlo reaction simulation calculations to reassess several studies of fissionfragment angular correlations. The reactions chosen are 15-30 MeV/nucleon 14N + 238U and 14.6 MeV/nucleon Z~ t97Au. Reanalysis by means of these stimulations leads to much lower limits than originally reported for the fraction of complete fusion. We infer that at these energies the probability is very large for the direct emission of at least one light particle prior to fission. This implies that the distinction between "complete fusion" and "incomplete fusion" has become blurred beyond meaningful distinction.

Fusion cross section from statistical analysis of4He+197Au reaction data

“…Such an idea has been proposed by Lefort and has been realized [6] in a quantitative analysis of the width and particularly a good reproduction of the slope on the high energy side of a particular xn7 excitations function for a given compound nucleus in order to estimate the corresponding momentum population. Recently, Monte Carlo reactions simulation calculations of fission-fragment angular correlations combined with the corresponding experimental data have been used [7] in order to decompose the fractions of complete and incomplete fusion. The analysis [7] leads to much lower limits for the fraction of complete fusion than 6riginally reported ones.…”

“…Recently, Monte Carlo reactions simulation calculations of fission-fragment angular correlations combined with the corresponding experimental data have been used [7] in order to decompose the fractions of complete and incomplete fusion. The analysis [7] leads to much lower limits for the fraction of complete fusion than 6riginally reported ones.…”