Article citations Gerward, L., Guilbert, N., Jensen, K.B. And Levring, H. (2004) WinXCom—A Program for Calculating X-Ray Attenuation Coefficients. Radiation Physics and Chemistry, 71, 653-654. Has been cited by the following article: • TITLE: AUTHORS:, KEYWORDS:,,,,,,, JOURNAL NAME:,, February 26, 2016 ABSTRACT: In this work, the Styrene-butadiene rubber (SBR)/lead oxide and the Styrene-butadiene rubber (SBR)/lead nitrate composites were prepared as gamma-radiation shielding materials. The investigated materials were prepared with three different weight percentage of lead oxide and lead nitrate (30, 50 and 70 wt%).

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The mass attenuation coefficients (μm) for all composite samples were measured experimentally at 511 and 661.6 keV photon energies. The measurements were made by performing transmission experiments with a 3' × 3' NaI (Tl) scintillation detector, which had an energy resolution of 7% at 0.662 MeV for the gamma-rays from the decay of 137Cs. The effective atomic numbers (Zeff) and the effective electron densities (Neff) were determined experimentally. Also they were determined theoretically using the obtained μm values for the studied composites samples by WinXCom program. The obtained results show that the experimental values of the composites are found to be in a good agreement with the theoretical values.

It is recognized that the mass attenuation coefficient (μm), effective atomic numbers (Zeff) and the effective electron densities (Neff) are increased in the composite samples which contain lead oxides than which contain lead nitrates. Finally, the Styrene-butadiene rubber (SBR)/lead oxide is better than Styrene-butadiene rubber (SBR)/lead nitrate polymer as gamma radiation shielding.

A Windows version of XCOM, the well-known program for calculating X-ray and gamma-ray attenuation coefficients and interaction cross sections, has been developed. The new program, called WinXCom. Monte Carlo simulation MCNPX code Mass attenuation coefficient. N Jensen KB Levring H WinX Com a program for calculating X-ray attenuation coefficients.

(4) w i = n i A i ∑ i n i A i Where, A i is the atomic weight of the sample, n i is a number of formula units. Validation Applying the Monte Carlo method is the one of the best solution for the investigation of different complex material behaviors since experimental duplication of investigation is quite complicated.

So, it is more suitable to apply some numerical methods such as Monte Carlo [ 12]. In this paper, a validation for input code was performed. On the other hand, WinXcom program was also used to calculate the gamma ray mass attenuation coefficients of the studied shielding materials. WinXcom [ 13, 14] program is a user friendly calculation program and input parameter specifications are quite flexible and easy to access. Microsoft office 2010 yazikovoj paket 1. In the WinXcom program, firstly, shielding material types were defined by their elemental mass fractions, which are totally the same as in MCNPX Monte Carlo code input.