Study of CR-39 and Makrofol efficiency for radon measurements.

Abstract This paper presents experimental and theoretical determination of CR-39 and Makrofol calibration coefficients in diffusion chambers for radon measurements. Experimental calibration was performed by irradiation of detectors in a calibration chamber; radon concentration in the chamber was continuosly measured by RAD7 device. Calculations were performed by the previously developed software for CR-39 detector. In addition the software was modified to enable calculation for Makrofol by implementing V function and other relevant data for this kind of detector. A good agreement was found between experimental and theoretical approaches. The comparison enabled selecting V function for CR-39 that gave the best agreement with the experimental results. Optimisation of chamber and detector dimensions was theoretically performed for different etching times. The dependence of calibration coefficient on 218Po deposition fraction was also analysed. Highlights • Experimental and theoretical calibration of CR-39 and Makrofol detectors were done. • V function for Makrofol was presented. • Previously developed software was modified to enable Makrofol calibration. • Optimisation of chamber and detector dimensions was theoretically performed. [ABSTRACT FROM AUTHOR]