2011/09/14 by M. Fidelus, D. Filges, Fidelus, M. +37
Physics and Astronomy · #Atomic and Molecular Physics #FOS: Physical sciences #Nuclear Experiment (nucl-ex) #Nuclear Physics and Applications #Nuclear physics research studies #nucl-ex
paper · pdf · doi:10.48550/arxiv.1109.3043
7 figures
arxiv created 2011/09/14 · openalex publication_date 2011/09/14 · arxiv updated 2011/09/15 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The energy and angular dependencies of double differential cross sections d2sigma/dOmegadE were measured for p,d,t,3,4,6He,6,7,8Li,7,9,10Be, and 10,11,12B produced in collisions of 1.2, 1.9, and 2.5 GeV protons with an Al target. The spectra and angular distributions of Li, Be, and B isotopes indicate a presence of two contributions: an isotropic, low energy one which is attributed to the evaporation of particles from excited remnants of the intranuclear cascade, and an anisotropic part which is interpreted to be due to multifragmentation of the remnants. It was found that such a hypothesis leads to very good description of spectra and angular distributions of all intermediate mass fragments (6He-12B) using the critical value of the excitation energy per nucleon as a single parameter, varying slowly with the beam energy.