Some Interesting Results on Backward Particles Production in Interactions of 4He and 6Li Nuclei With Emulsion Nuclei at 4.5 AGe V/c

Experimental data on 4He-Em and 6Li-Em interactions accompanied by relativistic (shower) and fast (grey) hadrons flying in the backward hemisphere at 4.5 AGe V/c are presented and analyzed. The probabilities of interactions accompanied by backward emission of shower , grey and compound particles are weakly dependent on the projectile mass number while they are mainly dependent on target size at Dubna energy. The dependence of the multiplicity distributions and mean values of the different particles emitted in the backward hemisphere on the target size and projectile spectator charge has been investigated. The compound multiplicity in the backward hemisphere was found to be a good parameter to represent the target size