"Fusion of 9Be with 124Sn"
Vivek Parkar, University of Huelva, Spain
(id #49)
Seminar: NoPoster: Yes
Invited talk: No
The complete and incomplete fusion cross-sections for 9Be+124Sn system have been deduced from the online gamma ray measurement technique, as all major evaporation residues formed in this reaction are stable. Two
clover detectors were used, one at 125 deg. for absolute fusion cross-section estimation and other at 90 deg (No Doppler shift) for identification of unshifted gamma lines. Along with this two charge particle telescopes and one monitor detector were placed at 65, 160 and 30 deg, respectively. The data have been acquired in the particle-gamma ‘OR’ condition. The coincidence between 55 deg clover detector and
particle telescopes (TAC1, TAC2) was also recorded in ADC. These TAC spectra have been further utilized for putting the gates in the gamma spectra and identification of gamma lines of the residues from
incomplete fusion process.
The measured cross-sections have been compared with the one dimensional barrier penetration model and coupled channel calculations. The barrier distribution have also been extracted from the measured data and compared with the theoretical calculations. The extracted complete fusion cross-sections showed a suppression of ~ 28 % compared to the coupled channel calculations. The projectile dependence for fusion on 124Sn target has also been studied and found that for 9Be nuclei the enhancement at below barrier energies is substantial compared to that of tightly bound nuclei.
clover detectors were used, one at 125 deg. for absolute fusion cross-section estimation and other at 90 deg (No Doppler shift) for identification of unshifted gamma lines. Along with this two charge particle telescopes and one monitor detector were placed at 65, 160 and 30 deg, respectively. The data have been acquired in the particle-gamma ‘OR’ condition. The coincidence between 55 deg clover detector and
particle telescopes (TAC1, TAC2) was also recorded in ADC. These TAC spectra have been further utilized for putting the gates in the gamma spectra and identification of gamma lines of the residues from
incomplete fusion process.
The measured cross-sections have been compared with the one dimensional barrier penetration model and coupled channel calculations. The barrier distribution have also been extracted from the measured data and compared with the theoretical calculations. The extracted complete fusion cross-sections showed a suppression of ~ 28 % compared to the coupled channel calculations. The projectile dependence for fusion on 124Sn target has also been studied and found that for 9Be nuclei the enhancement at below barrier energies is substantial compared to that of tightly bound nuclei.
