  We have studied the multifractality of pion emission process in 16O-AgBr
interactions at 2.1AGeV & 60AGeV, 12CAgBr &24Mg-AgBr interactions at 4.5AGeV
and 32S-AgBr interactions at 200AGeV using Multifractal Detrended Fluctuation
Analysis (MFDFA) method which is capable of extracting the actual multifractal
property filtering out the average trend of fluctuation. The analysis revels
that the pseudo rapidity distribution of the shower particles is multifractal
in nature for all the interactions i.e. pion production mechanism has in built
multi-scale self-similarity property. We have employed MFDFA method for
randomly generated events for 32S-AgBr interactions at 200 AGeV. Comparison of
expt. results with those obtained from randomly generated data set reveals that
the source of multifractality in our data is the presence of long range
correlation. Comparing the results obtained from different interactions, it may
be concluded that strength of multifractality decreases with projectile mass
for same projectile energy and for a particular projectile it increases with
energy. The values of ordinary Hurst exponent suggest that there is long range
correlation present in our data for all the interactions.
