Reaction and proton-removal cross sections of Li6, Be7, B10, C9,10,11, N12, O13,15, and Ne17 on Si at 15 to 53 MeV/nucleon
/ Authors
R. Warner, F. Cârstoiu, J. Brown, F. Becchetti, B. Davids, A. Galonsky, M. Horoi, J. Kolata, A. Nadasen, D. Roberts
and 5 more authors
R. Ronningen, C. Samanta, J. Schwarzenberg, M. Steiner, K. Subotić
/ Abstract
Excitation functions for total reaction cross sections, ${\ensuremath{\sigma}}_{R}$, were measured for the light, mainly proton-rich nuclei $^{6}\mathrm{Li}$, $^{7}\mathrm{Be}$, $^{10}\mathrm{B}$, $^{9,10,11}\mathrm{C}$, $^{12}\mathrm{N}$, $^{13,15}\mathrm{O}$, and $^{17}\mathrm{Ne}$ incident on a Si telescope at energies between 15 and 53 MeV/nucleon. The telescope served as target, energy degrader and detector. Proton-removal cross sections, ${\ensuremath{\sigma}}_{2p}$ for $^{17}\mathrm{Ne}$ and ${\ensuremath{\sigma}}_{p}$ for most of the other projectiles, were also measured. The strong absorption model reproduces the $A$-dependence of ${\ensuremath{\sigma}}_{R}$, but not the detailed structure. Glauber multiple scattering theory and the Jeukenne, Lejeune, and Mahaux (JLM) folding model provided improved descriptions of the measured ${\ensuremath{\sigma}}_{R}$ values. Rms radii, extracted from the measured ${\ensuremath{\sigma}}_{R}$ using the optical limit of Glauber theory, are in good agreement with those obtained from high energy data. One-proton removal reactions are described using an extended Glauber model, incorporating second order noneikonal corrections, realistic single particle densities, and spectroscopic factors from shell model calculations.
Journal: Physical Review C