Employment of Nuclear Track Detector CR-39 as a Radiation Dosimetry of Incident Alpha Particles at Different Angles


The work includes the use of nuclear track detector CR-39, to study the absorbed dose of incident alpha particles at different angles (30˚, 60˚, 90˚), and different irradiation time (1, 2, 3, 4) min, after etching with 6.25N of NaOH solution at 70˚ C, and etching time of 8h. It was noted that when the irradiation time increased, the tracks number per unit area increased as well, and the absorbed dose rate also increased. When the angle of irradiation increases the absorbed dose rate increased and reached the maximum value at an angle 90˚ and it was 9.4865x10-5 Gy/s, while it reached the lowest value at an incidence angle 30˚, 4.7432x10-5 Gy / s