Studying the Efficiency Dependence of CR-39 Detector on the Chamber Height

الملخص

The response of CR-39 plastic detector was computed practically taking into account the most significant parameter of chamber height that effect on efficiency of CR-39. The aim of this project is to calculate the sensitivity of a CR-39 detector in a diffusion chamber for radon measurements using various chamber heights like, (10, 15, 20, 25 and 30) cm. The obtained results revealed that the CR-39 detector's response for the chamber height of (10) cm is about 2 or 3 times higher than that of (15, 20, 25 and 30) cm, this is due to at the small height the concentrations of thoron (²²⁰Rn) will be mixing with the concentration of ²²²Rn.