\begin{document}$ ^{235} $\end{document}U(n, f) and \begin{document}$ ^{239} $\end{document}Pu(n, f) reactions. In this paper, pre-neutron fragment mass yields at incident energies from thermal up to 20 MeV are systematically studied using an empirical fission potential (EFP) model, the potential parameters of which are obtained from the measured data. The energy dependences of the peaks and valleys of the pre-neutron fragment mass yields are described by exponential and linear functions for the \begin{document}$ ^{235} $\end{document}U(n, f) and \begin{document}$ ^{239} $\end{document}Pu(n, f) reactions, respectively. The energy dependences of the evaporation neutrons, which play a crucial role in the reasonable description of pre-neutron fragment mass yields, are also obtained from the fission cross sections. The pre-neutron fragment mass yields in this study are not only consistent with the results of previous studies in regions of several MeVs but also agree well with existing measured data at incident energies from thermal up to 20 MeV. The results show that the feasibility of this EFP model is verified in this extended energy region."> Pre-neutron fragment mass yields for <sup>235</sup>U(n, f ) and <sup>239</sup>Pu(n, f ) reactions at incident energies from thermal up to 20 MeV -
  • [1]

    O. Hahn, F. Strassmann, Die Naturwissenschaften27(1), 11 (1939)

  • [2]

    R. Vogt, J. Randrup, J. Pruetet al., Phys. Rev. C80(4), 044611 (2009)

  • [3]

    N. Schunck and L. M. Robledo, Reports on Progress in Physics79(11), 116301 (2016)

  • [4]

    R. Capote, Y. J. Chen, F. J. Hambschet al., Nuclear Data Sheets131, 1 (2016)

  • [5]

    S. Oberstedt, R. Billnert, T. Belgyaet al., Nuclear Data Sheets119, 225 (2014)

  • [6]

    D. Neudecker, T. Taddeucci, R. Haightet al., Nuclear Data Sheets131, 289 (2016)

  • [7]

    M. Gooden, C. Arnold, M. Bhikeet al., EPJ Web of Conferences146, 04024 (2017)

  • [8]

    S. Goriely, J. L. Sida, J. F. Lemaîtreet al., Phys. Rev. Lett.111(24), 242502 (2013)

  • [9]

    X. J. Sun, C. G. Yu, N. Wanget al., Chin. Phys. C39(1), 014102 (2015)

  • [10]

    A. N. Andreyev, K. Nishio, K. H. Schmidt, Reports on Progress in Physics81(1), 016301 (2017)

  • [11]

    K. H. Schmidt and B. Jurado, Reports on Progress in Physics81(10), 106301 (2018)

  • [12]

    S. Goriely, S. Hilaire, M. Girodet al., The European Physical Journal A52(7) (2016)

  • [13]

    K. H. Schmidt, A. Keli¢, and M. V. Ricciardi, EPL (Europhysics Letters)83(3), 32001 (2008)

  • [14]

    C. Schmitt, K. H. Schmidt, and B. Jurado, Phys. Rev. C98(4), 044605 (2018)

  • [15]

    X. J. Sun, C. G. Yu, and N. Wang, Phys. Rev. C85(1), 014613 (2012)

  • [16]

    X. J. Sun, C. H. Pan, C. G. Yuet al., Communications in Theoretical Physics62(5), 711 (2014)

  • [17]

    A. D. Carlson, O. A. Wasson, P. W. Lisowskiet al.Measurements of the \begin{document}$^{235}$\end{document} U(n,f)cross section in the 3 to 30 MeV neutron energy region[M/OL]// Nuclear Data for Science and Technology, (Springer Berlin Heidelberg, 1992) 518https://doi.org/10.1007/978-3-642-58113-7_147

  • [18]

    J. Rapaport, J. Ullmann, R. Nelsonet al.Preliminary measurement of the \begin{document}$^{235}$\end{document} U(n,f)cross section up to 750 MeV[R/OL],Office of Scientific and Technical Information (OSTI), 1987https://doi.org/10.2172/5959481

  • [19]

    P. W. Lisowski, A. Gavron, W. E. Parker,et al., Uranium Target (1991)

  • [20]

    [EB/OL].http://www-nds.ciae.ac.cn/exfor/exfor.htm

  • [21]

    C. Straedeørgensen and H. H. Knitter, Nucl. Phys. A462(1)-85 (1987)

  • [22]

    P. P. D'Yachenko and B. D. Kuz'Minov,Yadern Fiz,7: 36-8 (1968)

  • [23]

    R. Müller, A. Naqvi, F. Käppeleret al.Numerical results of a (2E, 2V) measurement for fast neutron induced fission of \begin{document}$^{235}$\end{document} U and \begin{document}$^{237}$\end{document} Np[M],Kernforschungszentrum, 1981

  • [24]

    P. P. D'Yachenko, B. D. Kuz'Minov, and M. Z. Tarasko,Yadern Fiz,8: 286-96 (1968)

  • [25]

    A. Al-Adili , F. J. Hambsch, S. Pompet al., Phys. Rev. C93(3) (2016)

  • [26]

    Z. Shakir, W. Furman, and H. Franzjosef,Investigation of mass-tke distributions of fission fragments from the \begin{document}$^{235}$\end{document} U (n, f)-reaction in resonances, 2006https://publications.jrc.ec.europa.eu/repository/handle/JRC34313.

  • [27]

    F. Tovesson and T. S. Hill, Nuclear Science and Engineering165(2), 224 (2010)

  • [28]

    O. Shcherbakov, A. Donets, A. Evdokimovet al., Journal of Nuclear Science and Technology39(sup2), 230 (2002)

  • [29]

    B. I. Fursov, V. M. Kupriyanov, and G. N. SmirenkⅡ, Soviet Atomic Energy44(3), 262 (1978)

  • [30]

    N. I. Akimov, V. G. Vorob'Eva, and V. N. Kabenin,Yadern Fiz.13, 484-91 (1971)

  • [31]

    C. Wagemans, E. Allaert, A. Deruytteret al., Phys. Rev. C30(1), 218 (1984)

  • [32]

    K. Nishio, Y. Nakagome, I. Kannoet al., Journal of Nuclear Science and Technology32(5), 404 (1995)

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