A systematic study of the attenuation electromagnetic radiation in Nuclear Track Detectors (NTDs) is carried out. The gamma-ray, X-ray, UV, visible, and infrared NTDs are investigated using NaI(Tl) detector, Gas Electron Multiplier (GEM) UV-Vis spectrophotometer, FTIR spectrophotometer respectively. values some important parameters (e.g., optical depth, coefficient, etc.) three commercially ava...

BACKGROUND Although NaI(Tl) gamma counters play an important role in many quantitative positron emission tomography (PET) protocols, their calibration for positron-emitting samples has not been standardized across imaging sites. In this study, we characterized the operational range of a gamma counter specifically for positron-emitting radionuclides, and we assessed the role of traceable (68)Ge/...

A two-dimensional analysis of three coincident gamma-rays in (108)Ag(m) decay, detected by two NaI(Tl) scintillation detectors, allows a direct measurement of the source activity. A modification of the Eldridge-Crowther formulas derived originally for (125)I was done recently for the case of two coincident gamma-rays in (60)Co decay (Volkovitsky and Naudus, 2009). A similar approach is applied ...