-2- UCRL-4505 CONTENTS Page No. Abstract I, Il. . Introduction . . : . . ° 3 : . Experimental Procedure 4 4 III. Discussion . : . . . . . . 5 IV. Acknowledgments . . . . . . . 6 . : 7 Appendix . . Tllustrations Fig. 1. Fig. 2. Fig. 3. Schematic arrangement of target and monitor foils for bombardment in the circulating beam of the 184-inch cyclotron . . . . . 10 Energy dependence of formation cross section of certain fission products of natural uranium bv deuteron bombardment . . . . . 11 Empirical corrections of counting data for the combined effects of self-scattering , self- absorption, and saturation backscattering 9001863 . 12