  Two-particle femtoscopic correlations between non-identical charged particles
for different charge combinations are measured in Pb-Pb collisions at
$\sqrt{s_{\rm NN}}$ = 2.76 TeV with ALICE at the LHC. The three-dimensional
two-particle correlation functions are studied in different centrality bins.
The femtoscopic source size parameter ($R_{Out}$) and emission asymmetry
($\mu$) are extracted. It is observed that the average source size of the
system and emission asymmetry between particles increase from peripheral to
central events.
