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Studying the Physical Parameters of a Solid State Nuclear Track Detector
Nabil M. Hassan,Abdel Fattah Hafez 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.63 No.9
Solid state nuclear track detectors (SSNTDs) are widely used to measure various types of ionizingradiation. Thus, studying the physical parameters of SSNTDs, such as the bulk etch rate, the tracketching efficiency and detector sensitivity which could affect the registration efficiency, is important. This paper presents a simple technique used to study the dependence of those characteristic physicalparameters of SSNTDs on the alpha-particle energy. The detector sensitivity and the alpha trackdiameter were found to decrease exponentially with increasing alpha-particle energy’s, which impliesthat the SSNTDs can be used as alpha-particle spectrometers. The bulk etch rates of the LR-115and the CR-39 detectors were found to be 3.75 ± 0.21 µm h−1 and 1.72 ± 0.14 µm h−1, respectively. Moreover, the calibration coefficients of the LR-115 and the CR-39 detectors, placed in a diffusioncup with a fiberglass filter exposed to radon source inside a 50 L calibration chamber (supplied byGenitron, Germany), were found to be 0.036 ± 0.004 and 0.17 ± 0.03 [-tracks cm−2 per (Bq m−3day)], respectively.