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Estimation of alpha exposure on CR-39 detector using a UV-VIS spectrophotometer
H Alameri1, Y Abou-Ali1, M H Obeid2
1Department of Physics, Faculty of Science, University of Damascus, P.O. Box 30621, Damascus, Syria.
Abstract:
This work is dedicated to study the possibility of using UV-VIS spectrophotometer, a non-invasive technique with a versatile applications that is being used to determine the optical properties of matter, to estimate the CR-39 exposure to alpha particles. CR-39 detectors were exposed to alpha particles from two different alpha sources: 241Am and radon gas. Tracks densities on CR-39 were determined using the traditional counting method by an optical microscope. The transmittances of CR-39 detectors were measured using UV-VIS spectroscopy in the range of 400-1000 nm, and results were correlated with measured tracks densities. The comparison showed that this method is effective in estimating exposure of CR-39 to alpha particles, and that its efficiency has increased by increasing the etching time of the detectors.
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