Target dependence of clan model parameter in ⁸⁴ Kr ₃₆ – Emulsion interactions at 1 GeV per nucleon

Abstract

This article focusses on the study of clan model parameters and their target dependence in light of void probability scaling for heavy (Ag and Br) and light (C, N and O) groups of targets present in nuclear emulsion detector using ⁸⁴Kr₃₆ at ∼1 A GeV. The variation of scaled rapidity-gap (rap–gap) probability with single moment combination has been studied. We found that experimental points lie approximately on the negative binomial distribution (NBD) curve, indicating a scaling behaviour. The increase in average clan multiplicities ($\bar {N}$) for interactions with the pseudorapidity interval (Δη) was also observed. The values of $\bar {N}$ for AgBr targets are larger than those for C/N/O target and also average number of particles per clan ($\bar {n}_{\mathrm {c}}$) increases with increase in pseudorapidity interval. We further observed that for a particular target, the average number of particles per clan ($\bar {n}_{\mathrm {c}}$) increases with an increase in the size of projectile nucleus.