معايرة كاشف الأثر النووي CR-39 باستعمال المصدر النيتروني 241Am-9Be من أجل الأبعاد 1m، 2m، 3m، 3.4m بين الكاشف والمصدر النيتروني

Abstract

To calibrate the CR-39 passive nuclear track detector, ten detectors and two natural background detectors were used for each measurement, with four measurements performed. Twelve detectors were used in each process, with two detectors per irradiation time and two detectors for the natural background. After the measurements, and to visualize the potential tracks using an optical microscope, the irradiated detectors were chemically etched using a 6.25 mol/l sodium hydroxide solution at 70°C for 7 hr. Calculating the track density and drawing calibration lines, taking into account the natural neutron background, revealed that the 3m distance corresponded to the best correlation coefficient, R² = 0.988. Therefore, the  measurement process, Approval for 3m distance, was adopted for calibrating the CR-39 detector. We show that by comparing the previous correlation coefficient value with reference correlation coefficient values, the correlation coefficient value, R² = 0.988, was close to the best reference value, R² = 0.998.