Inclusive quasifree electrofission cross section for 238U

V. P. Likhachev, J. D. T. Arruda-Neto, W. R. Carvalho, Jr., A. Deppman, I. G. Evseev, F. Garcia, M. S. Hussein, L. F. R. Macedo, A. Margaryan, J. Mesa, V. O. Nesterenko, O. Rodriguez, S. A. Pashchuk, H. R. Schelin, and M. S. Vaudeluci
Phys. Rev. C 68, 014615 – Published 30 July 2003
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Abstract

We present results from a joint theoretical and experimental study of inclusive quasifree electrofission of 238U. The off-shell cross sections for the quasifree reaction stage have been calculated within the plane wave impulse approximation with distortion corrections included in the effective momentum approximation. Proton and neutron single-particle momentum distributions were calculated in the macroscopic-microscopic approach. The fissility for proton and neutron single hole excited states of the residual nuclei 237Pa and 237,238U was calculated within the compound nucleus model. Final state interaction corrections to residual nucleus excitation energy were calculated using the imaginary part of the optical potential. The total inclusive electrofission cross section was measured with high absolute precision, and all principal partial contributions are analyzed, in particular, the quasifree one.

  • Received 20 November 2002

DOI:https://doi.org/10.1103/PhysRevC.68.014615

©2003 American Physical Society

Authors & Affiliations

V. P. Likhachev1, J. D. T. Arruda-Neto1,2, W. R. Carvalho, Jr.1, A. Deppman1, I. G. Evseev3, F. Garcia4, M. S. Hussein1, L. F. R. Macedo1, A. Margaryan5, J. Mesa1, V. O. Nesterenko6, O. Rodriguez4, S. A. Pashchuk3, H. R. Schelin3, and M. S. Vaudeluci1

  • 1Instituto de Física, Universidade de São Paulo, São Paulo, Caixa Postal 66318, 05315-970, São Paulo, Brazil
  • 2Universidade de Santo Amaro, Sao Paulo, Brazil
  • 3CEFET, Curitiba, PR, Brazil
  • 4Instituto Superior de Ciencias y Tecnologia Nucleares, Havana, Cuba
  • 5Yerevan Physics Institute, Yerevan, Armenia
  • 6Bogolubov Laboratory of Theoretical Physics, JINR, Dubna, Russia

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Vol. 68, Iss. 1 — July 2003

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