MEASUREMENT OF KINETIC ENERGIES OF CS ISOTOPES PRODUCED IN O-16-209 NUCLEAR-FISSION BY DIFFERENTIAL RANGE METHOD(BI)

Fission of neutron-deficient nuclei of light actinide Pa-225 produced by O-16+Bi-209 has been studied by the radiochemical differential rang e method. The average ranges of several shielded nuclei of Cs were obt ained for incident oxygen beam energies of 94 and 103 MeV. Conversion of the observed ranges into energies was performed with reference to s pontaneous fission products of Cf-252. Thr average kinetic energies of the fission products for mass chains were also obtained. Comparison o f the observed data for Cs isotopes with the calculated values support s the conclusion that the total kinetic energy of a primary Cs isotope varies with the Q(gg) value over the observed isotopic distribution.