Independent Yields ofZr95from Thermal-Neutron Fission ofU235andU233

Independent fission yields of ${}_{}{}^{95}{}_{}{}^{}\mathrm{Zr}$ from thermal neutron fission of ${}_{}{}^{235}{}_{}{}^{}\mathrm{U}$ and ${}_{}{}^{233}{}_{}{}^{}\mathrm{U}$ have been determined to be 0.004±0.002 and 0.034±0.006, respectively. From the values obtained, together with previously measured yields, the width of the charge dispersion for mass-95 fission products in ${}_{}{}^{235}{}_{}{}^{}\mathrm{U}$ fission was found to be 0.53±0.03 in terms of the width parameter $\sigma$ of the normal Gaussian curve. An upper limit of 0.56 for $\sigma$ in the case of mass-95 products from ${}_{}{}^{233}{}_{}{}^{}\mathrm{U}$ fission indicates that charge dispersion in this system is similar to that for ${}_{}{}^{235}{}_{}{}^{}\mathrm{U}$.