Parameters of s-resonances in 246–248Cm fission cross sections

243Am neutron fission cross section and resonance parameters

“…The data of [12] agree with the results obtained by integrating relation (1) for the fission cross section measured in [10]. However, the recommended evaluations are even smaller, as in the case of subbarrier fission of curium isotopes [5]. For reactor measurements, the upper limit of the energy spectrum is poorly determined.…”

“…The results were compared with existing data and recommended evaluations.Subbarrier fission cross section of 243 Am in the resonance neutron energy range and the properties of the resonances have not been studied sufficiently to construct reliable data libraries which are necessary to study the transmutation of wastes and to improve models of transitional states in the theory of fission of heavy nuclei.The present work was performed as part of research on the fission of transuranium nuclei using the SVZ-100 lead moderation time neutron spectrometer at the Institute for Nuclear Research of the Russian Academy of Sciences (IYaI RAN) [1][2][3][4][5]. The resonance fission integrals and the area and fission width of the resolved resonances were calculated.…”

“…The present work was performed as part of research on the fission of transuranium nuclei using the SVZ-100 lead moderation time neutron spectrometer at the Institute for Nuclear Research of the Russian Academy of Sciences (IYaI RAN) [1][2][3][4][5]. Even though their resolution is low, such spectrometers are successfully used to measure nuclide cross sections which are difficult or impossible to study by other methods [6,7].…”

“…The optimal parameters A ƒ were found by the least-squares method based on the best description of the measured fission cross section (number of points analyzed n = 118) by the theoretical curve of the cross section calculated in the single-level approximation and averaged with the resolution function of the SVZ-100 spectrometer [5]. The optimal parameters A ƒ were found by the least-squares method based on the best description of the measured fission cross section (number of points analyzed n = 118) by the theoretical curve of the cross section calculated in the single-level approximation and averaged with the resolution function of the SVZ-100 spectrometer [5].…”

“…The optimal parameters A ƒ were found by the least-squares method based on the best description of the measured fission cross section (number of points analyzed n = 118) by the theoretical curve of the cross section calculated in the single-level approximation and averaged with the resolution function of the SVZ-100 spectrometer [5]. For this reason, in contrast to [5], the functional to be minimized was supplemented with an additional term containing a priori information about the parameters A ƒ . Only 10 features (extrema) were observed in the energy interval, i.e., the analyzed curve does not give much information about the desired parameters (see Fig.…”