M. Elnadi et al., BACKWARD SLOW PROTONS PRODUCTION IN THE INELASTIC INTERACTIONS OF LI-6 AND LI-7 NUCLEI WITH EMULSION NUCLEI AT DUBNA ENERGY, The European Physical Journal. A: Hadrons and Nuclei, 3(2), 1998, pp. 183-195
We report the experimental measurements on the multiplicity of slow ta
rget associated particles, in the forward (theta(lab) less than or equ
al to 90 degrees) and backward (theta(lab) > 90 degrees) hemispheres,
and the different correlations between the backward slow protons and t
he production of hadrons in both hemispheres in the interactions of Li
-6(3.7 A GeV) and Li-7(2.2 A GeV) with emulsion nuclei. The study of t
he number of backward slow protons (N-b(b) and N-g(b)) indicates that
while the number of backward black particles, N-b(b) is a good factor
representing the purely target fragments, the number of backward grey
particles, N-g(b) can be considered as an accurate experimental Factor
for the impact parameter dependence of the collision. It is also show
n that the most central collisions are events having N-g(b) > 0 and N-
s(b) > 0. We confront the data with a multiple scattering model incorp
orating both binary cascading and evaporation of residual rlucleus. Th
e model applies well in the region of limited cascading (backward hemi
sphere). As for the forward hemisphere, where cascading becomes more b
ranched, the model becomes less applicable.