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Please use this identifier to cite or link to this item: http://hdl.handle.net/11375/23514
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dc.contributor.advisorThode, H. G.-
dc.contributor.authorYoung, Beverly George-
dc.date.accessioned2018-11-09T02:14:58Z-
dc.date.available2018-11-09T02:14:58Z-
dc.date.issued1958-10-
dc.identifier.urihttp://hdl.handle.net/11375/23514-
dc.description.abstractThe absolute abundances of fission-product xenon and krypton isotopes in six uranium minerals were determined mass spectrometrically using the isotope dilution technique. The fission products were resolved into a U spontaneous fission component, a U 235 neutron-induced fission component, and a U 238 neutron-induced fission component. The presence of U 238 of neutron-induced fission indicated that t he neutron energies in uranium minerals were higher than had been suspected. Internal consistency in the analysis was achieved only when the I 29 yield in u235 thermal neutron fission reported by Purkayastha and Martin was lowered by 20%. The number of U 238 spontaneous fissions was calculated from the lead age, U 238 content, and the U 238 pontaneous fission half life. A comparison of the number of fission products from U 238 spontaneous fission and the number of spontaneous fissions in each of the six minerals showed that five of the six minerals had lost large portions of their noble gases. A fractionation of krypton relative to xenon accompanied this loss. The results obtained for the sixth mineral indicated little or no loss of xenon and krypton. Absolute yields for U 238 spontaneous fission were therefore determined from an analysis of this mineral.en_US
dc.language.isoenen_US
dc.subjectabsolute yieldsen_US
dc.subjectxenonen_US
dc.subjectkryptonen_US
dc.subjectspontaneous fissionen_US
dc.titleThe Absolute Yields of Xenon and Krypton in U 238 Spontaneous Fissionen_US
dc.typeThesisen_US
dc.contributor.departmentPhysicsen_US
dc.description.degreetypeThesisen_US
dc.description.degreeDoctor of Philosophy (PhD)en_US
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