Introduction: Natural radioactivity in the soil is considered a major indicator of radiological contamination. Primordial radionuclides are the main source of natural radioactivity. Natural radioactivity transfers radionuclides into the environment and poses radiation hazards to people's health. Therefore, the present study aimed to determine the radon concentration an...

Alpha-particle radiobiological experiments involve irradiating cells with alpha particles and require accurate positions where the alpha particles hit the cells. In the present work, we prepared thin CR-39 detectors from commercially available CR-39 SSNTDs with a thickness of 100 lm by etching them in 1 N NaOH/ethanol at 40 C to below 20 lm. The desired final thickness was achieved within 8 h. ...

In this work, the dependence of bulk etches rate VB for CR-39detector on thetemperature T, etching time t and concentration N NaOH etchant solution has been studied fordetectors material types PADC. The concentration, time, temperatureand other conditions havebeen varied in ranges (5.25-8.25) N, (1-5) hand (60-80) °C PADC respectively. case, thickness removed by from 0.20 to 6.10

In this work, the empirical parameterization describing the alpha particles’ track depth in CR-39 detectors is extended to describe longitudinal track profiles against etching time for protons and alpha particles. MATLAB based software is developed for this purpose. The software calculates and plots the depth, diameter, range, residual range, saturation time, and etch rate versus etching time. ...