NXcom – A program for calculating attenuation coefficients of fast neutrons and gamma-rays NXcom – A program for calculating attenuation coefficients of fast neutrons and gamma-rays El-Khayatt, A.M. 2011-01-01 00:00:00 This work is concerned with a construction and use of NXcom computer program for calculating the removal and attenuation coefficients of transmitted fast neutrons and γ-rays, respectively, through mixtures, composites, concretes and compounds. The program uses only one input data file for neutrons and γ-rays calculations. For γ-ray attenuation, the program predictions were tested by comparing them with the well-known WinXcom program results and an excellent agreement was noticed. Also, it has been used for calculating the values of macroscopic effective removal cross-sections Σ R (cm −1 ) for five new published polyamide and anhydride composites designed for shielding mixed neutron and γ-rays. The obtained values for Σ R using the program and the reported attenuation thicknesses which were based on the Monte Carlo N-Particle (MCNP) code showed the same trend.

The NXcom program can be used as a preliminary effective tool for testing the shielding material against fast neutrons and γ-rays. Annals of Nuclear Energy Elsevier http://www.deepdyve.com/lp/elsevier/nxcom-a-program-for-calculating-attenuation-coefficients-of-fast-nFwyvTvnLl. Abstract This work is concerned with a construction and use of NXcom computer program for calculating the removal and attenuation coefficients of transmitted fast neutrons and γ-rays, respectively, through mixtures, composites, concretes and compounds. The program uses only one input data file for neutrons and γ-rays calculations. For γ-ray attenuation, the program predictions were tested by comparing them with the well-known WinXcom program results and an excellent agreement was noticed. Also, it has been used for calculating the values of macroscopic effective removal cross-sections Σ R (cm −1 ) for five new published polyamide and anhydride composites designed for shielding mixed neutron and γ-rays. The obtained values for Σ R using the program and the reported attenuation thicknesses which were based on the Monte Carlo N-Particle (MCNP) code showed the same trend.

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The NXcom program can be used as a preliminary effective tool for testing the shielding material against fast neutrons and γ-rays. Journal Annals of Nuclear Energy – Elsevier Published: Jan 1, 2011.