“…Details of the experimental technique are given in our earlier publications where we have studied spatial distribution of target fragments in the light of intermittency and multifractality [44][45][46], universal scaling behavior of fast helium fragments [47] and emission characteristics of intermediate mass projectile fragments [48,49]. In this work we have developed a 'toy model' of nuclear multi-fragmentation and examined, using cluster approximation technique, the effect of mass conservation constraint on the traditional signals of critical behavior.…”