SOME YIELDS IN THERMAL NEUTRON FISSION OF U233 AND Pu239

Abstract
Relative yields of Sr89, Sr91, Ba139, Ba140, and La141 have been measured for U233 and Pu239 thermal neutron fission. Ion exchange separations and 4π beta-counting methods were used. The following relative values were obtained for the nuclides as listed: 1.05, 1.00, 1.00, 1, and 1.10 in U233 fission and 0.301, 0.431, 1.07, 1, and 1.01 in Pu239 fission.