Image Monitoring In-situ of Alpha Particles by ...

Photothermal deflection is described in this article to detect the change in the thermal and optical properties of the track nuclear detector CR-39 when irradiated to alpha particles. The probe laser beam deflection was found to decrease with the increase of time of exposure to alpha particles. A novel technique, in-situ image analysis of the photothermal deflection spot is presented to assess the detection of the CR-39 to any nuclear particle or radiation instantaneously. This technique offers the ability to acquire data very rapidly and can be used for monitoring any source of nuclear radiations immediately.