Variation of multiplicities of the secondary charged particles on the geometry of collision

Abstract

The total charge of the projectile spectator fragments, Q pf is taken as a measure of the degree of centrality of collision thus defining the collision geometry. In this paper the mean multiplicities of the different charged secondaries emitted in the interaction of 24 Mg-Em at 4.5A GeV have been investigated as a function of the total charge Q pf of the projectile spectator fragments. It has been observed that the average number of the produced particles, <N s > and the heavily ionizing particles, <N h > decreases exponentially with the increase of Q pf showing strong correlation with the geometry of the collision. An attempt has also been made to compare these results with 84 Kr-Em interaction at 0.95A GeV.