Two-particle Hanbury-Brown-Twiss (HBT) interferometry is an important probe for understanding the space-time structure of particle emission sources in high energy heavy ion collisions. We present the comparative studies of HBT radii in Pb+Pb collisions at $sqrt{s_{rm{NN}}}$ = 17.3 GeV with Au+Au collisions at $sqrt{s_{rm{NN}}}$ = 19.6 GeV. To further our understanding for this specific energy regime we also compare the HBT radii for Au+Au collisions at $sqrt{s_{rm{NN}}}$ = 19.6 GeV with Cu+Cu collisions at $sqrt{s_{rm{NN}}}$ = 22.4 GeV. We have found interesting similarity in the $R_{rm out}/R_{rm side}$ ratio with $m_{rm T}$ across the collision systems while comparing the data for this specific energy zone which is interesting as it acts as a bridge from SPS energy regime to the RHIC energy domain.
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