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Determining photon energy absorption parameters for different soil samples
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نویسنده
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kucuk n. ,tumsavas z. ,cakir m.
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منبع
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journal of radiation research - 2013 - دوره : 54 - شماره : 3 - صفحه:578 -586
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چکیده
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The mass attenuation coefficients (μs) for five different soil samples were measured at 661.6,1173.2 and 1332.5 kev photon energies. the soil samples were separately irradiated with 137cs and 60co (370 kbq) radioactive point gamma sources. the measurements were made by performing transmission experiments with a 2″ × 2″ 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 and theoretically using the obtained μs values for the soil samples. furthermore,the zeff and neff values of the soil samples were computed for the total photon interaction cross-sections using theoretical data over a wide energy region ranging from 1 kev to 15 mev. the experimental values of the soils were found to be in good agreement with the theoretical values. sandy loam and sandy clay loam soils demonstrated poor photon energy absorption characteristics. however,clay loam and clay soils had good photon energy absorption characteristics. © 2012 the author 2012.
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کلیدواژه
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Effective atomic number; Effective electron density; Gamma-ray transmission; Mass attenuation coefficient; soil sample
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آدرس
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department of physics,faculty of arts and sciences,uludag university,gorukle campus,16059 bursa, Turkey, department of soil science,faculty of agriculture,uludag university,gorukle campus,16059 bursa, Turkey, department of physics,faculty of arts and sciences,uludag university,gorukle campus,16059 bursa, Turkey
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Authors
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