Study of 9Be+12C elastic scattering at energies near the Coulomb barrier

Abstract

In this work, angular distribution measurements for the elastic channel were performed for the 9Be+12C reaction at the energies ELab=13.0, 14.5, 17.3, 19.0 and 21.0 MeV, near the Coulomb barrier. The data have been analyzed in the framework of the double folding S\~ao Paulo potential. The experimental elastic scattering angular distributions were well described by the optical potential at forward angles for all measured energies. However, for the three highest energies, an enhancement was observed for intermediate and backward angles. This can be explained by the elastic transfer mechanism. Keywords: 9Be+12C, Elastic Scattering, S\~aoo Paulo Potential

Recent developments in fusion and direct reactions with weakly bound nuclei

“…For 9 Be the situation is even less clear than for 7 Li, since in some cases the real and imaginary potentials which fit the elastic scattering data do not obey the dispersion relation [121,122,60]. For this projectile there are not too many systems investigated: 12 209 Bi [122].…”

Cluster folding model analysis of the 7Be+28Si elastic scattering in the near-barrier

“…The energy dependence of the nuclear OP at the Coulomb barrier is investigated to examine the impact of breakup, transfer, and other processes on the elastic channels for reactions with low breakup threshold energies. Several recent works [5,10,[50][51][52][53][54][55][56][57][58] have investigated the energy dependence of the OP in the elastic scattering of WB stable, radioactive, and halo nuclei on a variety of targets. Figure 7 (left panel) depicts the energy dependence of the resulting real and imaginary volume integrals for 7 Be+ 28 Si OPs, as tabulated in table 1.…”

Study of the threshold anomaly in the elastic scattering of d+$^{197}$Au

“…The BTA analysis has been reported by studying the energy dependence of the optical potential that accounts for the reactions of systems involving stable weakly bound projectiles like 6 Li [8,[12][13][14][15][16][17][18][19][20][21][22][23][24], 7 Li [8,13,15,19,21,22,24,[24][25][26][27], and 9 Be [3,[28][29][30][31][32], as well as radioactive like 6 He [33,34], 7 Be and 8 B [35]. In all these studies, it was found that the imaginary part of the optical potential does not drop to zero at energies centered on the Coulomb barrier, as expected when the usual TA is observed.…”