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The cold binary fission of even-even 244-258Cf isotopes has been studied bytaking the interacting barrier as the sum of Coulomb and proximity potential.The favorable fragment combinations are obtained from the cold valley plot(plot of driving potential vs. mass number of fragments) and by calculating theyield for charge minimized fragments. It is found that highest yield for244,246,248Cf isotopes are for the fragments with isotope of Pb (Z=82) as onefragment, whereas for 250Cf and 252Cf isotopes the highest yield is for thefragments with isotope of Hg (Z=80) as one fragment. In the case of254,256,258Cf isotopes the highest yield is for the fragments with Sn (Z=50) asone fragment. Thus, the fragment combinations with maximum yield reveal therole of doubly magic and near doubly magic nuclei in binary fission. It isfound that asymmetric splitting is favoured for Cf isotopes with mass number A< 250 and symmetric splitting is favoured for Cf isotopes with A > 252. In thecase of Cf isotope with A=252, there is an equal probability for asymmetric andsymmetric splitting. The individual yields obtained for the cold fission of252Cf isotope are compared with the experimental data taken from the {\gamma}-{\gamma}- {\gamma} coincidences technique using Gammasphere.

Isotopic yield in cold binary fission of even-even $^{244-258}$Cf isotopes