A rapid method of calculating planar-shield gamma-ray transmission

Goryachev, B. V.; Ларионов, В. В.; Mogil'nitskii, S. B.; Savel'ev, B. A.

doi:10.1007/bf01125203

Cited by 1 publication

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“…The absorption of gamma-rays with an energy of 80 keV was anylized using the Goryachev-Larionov model [10]. The calculations were performed for the following initial data: the geometric sizes of the target sample (y 0 , z 0 , x o = d), the attenuation coefficient μ(E), the total cross section of absorption for Compton scattering Σ h g and photoeffect Σ f g , the total cross section of scattering Σ s , the integral «effective» probability of X-ray photon , and the initial intensity for the incident flow of gamma-ray emission is equal to 1.…”

Section: Resultsmentioning

confidence: 99%

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Analysis of hydrogenated zirconium alloys irradiated with gamma - rays

2017

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Abstract. The paper represents the investigations concerning the geometrical size effect of hydrogenated zirconium alloys (Zr-1Ni-H) during gamma-ray irradiation on the amount of energy absorbed. The results have shown that the less the cross-sectional dimensions of the sample or product is, the less energy is absorbed. The paper provides theoretical calculations. The zirconium sample with a cross-section of 2.8х2.8 cm absorbs 30-35% of the energy of the incident gamma-ray flow. The increase in the cross-section of a product up to 28 cm leads to the increase in the absorbed energy by more than 2 times. At the same time, the thickness of the product is constant. This effect is explained by the multiple scattering of gamma-rays. It leads to the nonuniform distribution of defects which can accumulate hydrogen and should be considered when developing the analysis methods. These edge effects are confirmed by the measurement of the thermal electromotive force for the samples of zirconium alloys before hydrogenation and gamma-ray irradiation, and after irradiation.

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Section: Resultsmentioning

confidence: 99%

“…The amount of absorbed energy depends both on the material properties and geometrical sizes. To explain this fact, an analytical calculation method is used [10]. The direct analysis of changes in the properties of irradiated materials was conducted by the thermal electromotive force method [11].…”

Section: Introductionmentioning

confidence: 99%