  The alpha accompanied cold ternary fission of even-even 244Cm, 246Cm, 248Cm,
250Cm and 252Cm isotopes have been studied by taking the interacting barrier as
the sum of Coulomb and proximity potential with the fragments in equatorial
configuration. The favorable fragment combinations are obtained from the cold
reaction valley plot and by calculating the relative yield for the charge
minimized fragments. In the alpha accompanied ternary fission of 244Cm isotope,
the highest yield is found for the fragment combination 110Ru+4He+130Sn, which
possess near doubly magic nuclei 130Sn. For the ternary fission of 246Cm,
248Cm, 250Cm and 252Cm isotopes with 4He as light charged particle, the highest
yield is obtained for the fragment combination with doubly magic nuclei 132Sn
as the heavier fragment. The emission probabilities and kinetic energies of
long range alpha particle have been computed for the 242,244,246,248Cm isotopes
and are found to be in good agreement with the experimental data. The relative
yields for the 4He accompanied ternary fission (equatorial and collinear) of
242-252Cm isotopes are compared with the corresponding yield for binary
fission. The effect of deformation and orientation of fragments in the 4He
accompanied ternary fission of 244-252Cm isotopes are studied. Our study
reveals that the ground state deformation has an important role in the alpha
accompanied ternary fission as that of shell effect.
