RATIO OF ASYMMETRIC TO SYMMETRIC FISSION OF U$sup 233$ AS A FUNCTION OF NEUTRON ENERGY
Journal Article
·
· Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D
Radiochemical measurements of the relative yields of the flssion products Mo/sup 99/, Ag/sup 111/, Ag/sup 119/, and Cd/sup 115/, from the low- energy neutron-induced fission of U/sup 233/ were nergies chosen were thermal, 1.8, 2.3, and 4.7 ev, the latter three corresponding to the peaks of previously reported resonances. It was found that the ratio of asymmetric to symmetric fission is larger at the 1.8- and 2.3-ev resonances than at thermal energies. At the 4.7-ev resonance however, this ratio is the same as at thermal energys to within experimental uncertainties. In addition, it was found that the ratio for epi-cadmium neutrons differed from that for thermal neutrons. The results are consistent with Wheeler's prediction that the ratio of asymmetric to symmetric fission should depend upon the spin state of the fissioning nucleus. (auth)
- Research Organization:
- Phillips Petroleum Co., Idaho Falls, Idaho
- NSA Number:
- NSA-13-014806
- OSTI ID:
- 4244185
- Journal Information:
- Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 113; ISSN PHRVA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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