УДК 539.172 EVALUATION OF CROSS SECTIONS FOR Cm-242,-243,-244

The work is devoted to the analysis of available experimental and evaluated data on the neutron cross sections for Cm-242, Cm-243, Cm-244. A comparison of experimental data with the results of theoretical calculations and the evaluations of the most important cross sections were performed. As a result the new version of complete files of evaluated neutron cross sections for Cm-242, Cm-243, Cm-244 were performed. These files were included into the BROND-3 library the formations of which is under development in Russian Nuclear Data Center. For curium isotopes there are considerably less experimental data than for americium isotopes. The measurements of the total and radiative capture cross sections are restricted to the neutron resonance region and only the fission cross sections were measured in the fast neutron energy region. That is why all the neutron cross section evaluations are mainly based on the analysis of the available measured fission cross sections and on the statistical calculations of other cross sections. For Cm-245 and Cm-246 the new experimental fission cross sections, obtained in the framework of the Project [18] agree good enough with the available experimental data and the new cross section evaluations made by Minsk ’ group in 1996 [1, 2]. For Cm-243 the discrepancies of the measured fission cross sections with the new evaluation of Minsk ’ group are considerable for all neutron energies. For Cm-244 the new experimental data call for the re-examination of the previous evaluations [3]. In this pape