Gamma-ray attenuation properties of some NLO materials: potential use in dosimetry
Özet
Mass attenuation coefficients (mu m) for some nonlinear optical materials such as potassium dihydrogen phosphate, ammonium dihydrogen phosphate, zinc tris-thiourea sulphate, and zinc thiourea chloride were measured using a 2x2 NaI(Tl) scintillation detector at gamma energies of 122 keV, 356 keV, 511 keV, 662 keV, 840 keV, 1170 keV, 1270 keV, and 1330 keV. In addition, GEANT4 simulations were carried out to mimic the experiment at these energies. As a result, good agreement between the experimental and GEANT4 results was observed. The measured mu mvalues were used to compute effective atomic numbers (Z(eff)) for the selected materials. It was found that the Z(eff) values were in the range typical for dosimetric materials.