1975Natl. Bur. Stand. (U.S.), Spec. Publ.; (United States)Requires access

Statistical estimation of physical quantities in thermal- and fast-neutron-induced fission. [Fission product mass yields, fragment kinetic energies, numbers of prompt neutrons]

T. Yamamoto, K. Sugiyama

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Abstract

Making use of a model based on the statistical theory in which the scission-point distance is treated as an adjustable parameter, calculations were performed to obtain the mass yields of fission products, the kinetic energies of fission fragments and the numbers of prompt neutrons from neutron-induced fission of /sup 232/Th, /sup 231/Pa, /sup 233/U, /sup 235/U, /sup 238/U, /sup 237/Np, /sup 239/Pu and /sup 241/Pu for incident-neutron energies ranging from thermal to 14.7 MeV. Calculated results reproduced experimental values well. The proposed method could be used in the estimation of unknown physical quantities in fission. 5 figures. (auth)

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What this paper is about

Making use of a model based on the statistical theory in which the scission-point distance is treated as an adjustable parameter, calculations were performed to obtain the mass yields of fission products, the kinetic energies of fission fragments and the numbers of prompt neutrons from neutron-induced fission of /sup 232/Th, /sup 231/Pa, /sup 233/U, /sup 235/U, /sup 238/U, /sup 237/Np, /sup 239/Pu and /sup 241/Pu for incident-neutron energies ranging from thermal to 14.7 MeV. Calculated results reproduced experimental values well. The proposed method could be used in the estimation of unknown physical quantities in fission. 5 figures. (auth)

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Available abstract

Making use of a model based on the statistical theory in which the scission-point distance is treated as an adjustable parameter, calculations were performed to obtain the mass yields of fission products, the kinetic energies of fission fragments and the numbers of prompt neutrons from neutron-induced fission of /sup 232/Th, /sup 231/Pa, /sup 233/U, /sup 235/U, /sup 238/U, /sup 237/Np, /sup 239/Pu and /sup 241/Pu for incident-neutron energies ranging from thermal to 14.7 MeV. Calculated results reproduced experimental values well. The proposed method could be used in the estimation of unknown physical quantities in fission. 5 figures. (auth)

Key concepts: Fission, Cold fission, Cluster decay, Nuclear physics, Fission product yield, Neutron, Fission products, Neutron temperature

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Statistical estimation of physical quantities in thermal- and fast-neutron-induced fission. [Fission product mass yields, fragment kinetic energies, numbers of prompt neutrons] — Research Paper | ScholarLens