Spontaneous Fission Yields from Uranium and Thorium
- 15 November 1953
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 92 (4), 907-912
- https://doi.org/10.1103/physrev.92.907
Abstract
Relative spontaneous fission yields from uranium and thorium have been determined by extracting xenon krypton from geologically old uranium and thorium minerals and measuring the isotopic abundances of these gases in a mass spectrometer. Arguments are presented for believing that the anomalous isotopic abundances observed are caused by spontaneous fission rather than by some other fission process. The spontaneous fission yield curve peaks were found to be much sharper than those associated with other fission processes. Evidence was found for fine structure in the fission yield curve at mass 132, possibly connected with preferential formation of spontaneous fission fragments containing 50 protons and 82 neutrons. Evidence for neutron induced fission in pitchblende was found.Keywords
This publication has 12 references indexed in Scilit:
- Nuclear Constitution and the Interpretation of Fission PhenomenaPhysical Review B, 1953
- Asymmetric FissionPhysical Review B, 1953
- Spontaneous FissionPhysical Review B, 1952
- The Occurrence of Plutonium in NatureJournal of the American Chemical Society, 1951
- Isolation of Microgram Quantities of Naturally-occurring Plutonium and Examination of its Isotopic Composition1Journal of the American Chemical Society, 1951
- Disintegrations produced by the Nuclear Capture of Slow Negative -MesonsProceedings of the Physical Society. Section A, 1951
- The Isotopes of Xenon and Krypton in Pitchblende and the Spontaneous Fission ofPhysical Review B, 1950
- The Fission Yield ofXe133and Fine Structure in the Mass Yield CurvePhysical Review B, 1950
- The Energy Distribution and Number of Cosmic-Ray Neutrons in the Free AtmospherePhysical Review B, 1946
- Stability of Uranium and Thorium for Natural FissionPhysical Review B, 1939