Neutron-induced fission cross section of Np-237 in the keV to MeV range at the CERN n_TOF facility
2016
The neutron-induced fission cross section of 237Np was experimentally determined at the high-resolution
and high-intensity facility n TOF, at CERN, in the energy range 100 keV to 9 MeV, using the 235U(n,f ) and 238U(n,f ) cross section standards below and above 2 MeV, respectively. A fast ionization chamber was used
in order to detect the fission fragments from the reactions and the targets were characterized as far as their
mass and homogeneity are concerned by means of a spectroscopy and Rutherford backscattering spectroscopy
respectively. Theoretical calculations within the Hauser-Feshbach formalism have been performed, employing
the EMPIRE code, and the model parameters were tuned in order to successfully reproduce the experimental fission
cross-sectional data and simultaneously all the competing reaction channels.
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