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Title: Fast Neutron Removal Cross-Section Calculations: Computer Program

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Title:
Fast Neutron Removal Cross-Section Calculations: Computer Program
Author Name:
Kulwinder Singh Mann1,2, Manmohan Singh Heer3 and Asha Rani4
Abstract:
For investigations of the fast neutron attenuation parameters in mixtures and composite materials, the computer programs MERCSF-N and NXcom are available. The new program, called WinNC-toolkit, is a reengineering of these programs with the objectives of filling the gap that exists in literature (available programs) for nine elements and improving the user interface. The program is designed in MS-Excel, 2007 and has some extended capabilities, over the previous programs, such as to simplify the input procedure, provide tabulated, graphical results and calculates the relaxation length λ (cm). In addition, the present work reports estimated values of the fast neutron attenuation parameters for some compounds made from the nine elements (Tc, Pm, Po, At, Rn, Fr, Ra, Ac and Pa), missing in NXcom program, using bi-quadratic polynomial fitting interpolation method. The calculated values of ΣR/ρ for the compounds containing one or more of these nine elements are provided for the first time. The toolkit results for effective removal cross-sections were qualified an excellent agreement with the manually calculated values of the same. The application of WinNC-toolkit is in calculating the fast neutron attenuation parameters of engineering materials used for nuclear-reactors.
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