Impact Parameter Dependence of Light Charged Particle Production in 25 A MeV 16O on Tb, Ta and 35 A MeV 14N on Sm and Ta
The impact parameter dependence of light charged particle (p,d,t,α) emission has been studied using an impact parameter selection based on coincident detection of residues or fission fragments. The energy spectra at twelve angles between 20° and 150° have been fit by a multiple moving source parametrization. The angle and energy integrated preequilibrium proton multiplicities decrease with increasing impact parameter in qualitative agreement with a Fermi jet calculation. The preequilibrium d/p and t/p multiplicities increase slowly with increasing impact parameter and are nearly identical at the two bombarding energies. The preequilibrium α/p ratio shows a less consistent dependency on impact parameter but decreases significantly with increasing bombardment energy. A calculation of thed/p and t/p multiplicity ratios with a transport model incorporating complex particle emission is quite successful in reproducing the absolute magnitude, impact parameter dependence, and bombarding energy dependence of the experimental total multiplicities.
Repository citation: Prindle, D.; Elmaani, A.; Hyde-Wright, C.; Jiang, W.; Sonzogni, A. A.; Vandenbosch, R.; Bowman, D.; Cron, G.; Danielewicz, P.; Dinius, J.; Hsi, W.; Lynch, W. G.; Montoya, C.; Peaslee, Graham F.; Schwarz, C.; Tsang, M. B.; Williams, C.; de Souza, R. T.; Fox, D.; and Moore, T., "Impact Parameter Dependence of Light Charged Particle Production in 25 A MeV 16O on Tb, Ta and 35 A MeV 14N on Sm and Ta" (1998). Faculty Publications. Paper 1203.
Published in: Physical Review C, Volume 57, Issue 3, March 1, 1998, pages 1305-1318. Copyright © 1998 American Physical Society.