A Preliminary Calculation of 235U (n,2n) 234U Cross Sections

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Preliminary calculations of the total two-neutron emission cross section, {sup 235}U(n,2n) {sup 234}U and the partial two-neutron emission cross sections, {sup 235}U(n, 2n{gamma}) {sup 234}U, are presented. The {sup 235}U(n, 2n{gamma}) {sup 234}U cross sections describe the process of {gamma}-decays in the residual nucleus following the two-neutron emission and were calculated for several {gamma}-transitions between states of the ground-state band of the {sup 234}U nucleus. All three reaction mechanisms, namely, direct, pre-equilibrium and compound, were included. In addition, fission competition as well as {gamma}-cascade were considered in the compound component of the cross section calculations. A comparison with the relevant ... continued below

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Chen, H.; Ross, M.A.; Reffo, G.; White, R.M. & Younes, W. November 23, 1999.

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Preliminary calculations of the total two-neutron emission cross section, {sup 235}U(n,2n) {sup 234}U and the partial two-neutron emission cross sections, {sup 235}U(n, 2n{gamma}) {sup 234}U, are presented. The {sup 235}U(n, 2n{gamma}) {sup 234}U cross sections describe the process of {gamma}-decays in the residual nucleus following the two-neutron emission and were calculated for several {gamma}-transitions between states of the ground-state band of the {sup 234}U nucleus. All three reaction mechanisms, namely, direct, pre-equilibrium and compound, were included. In addition, fission competition as well as {gamma}-cascade were considered in the compound component of the cross section calculations. A comparison with the relevant experimental data obtained from the GEANIE detector at the LANSCE/WNR facility in Los Alamos was also carried out.

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1,500 Kilobytes pages

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  • Other Information: PBD: 23 Nov 1999

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  • Report No.: UCRL-ID-137718
  • Grant Number: W-7405-Eng-48
  • DOI: 10.2172/793456 | External Link
  • Office of Scientific & Technical Information Report Number: 793456
  • Archival Resource Key: ark:/67531/metadc742386

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  • November 23, 1999

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  • Oct. 19, 2015, 7:39 p.m.

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  • May 6, 2016, 2:54 p.m.

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Chen, H.; Ross, M.A.; Reffo, G.; White, R.M. & Younes, W. A Preliminary Calculation of 235U (n,2n) 234U Cross Sections, report, November 23, 1999; California. (digital.library.unt.edu/ark:/67531/metadc742386/: accessed October 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.