Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with multi-step etching

Response of CR-39 Polymer Radon-Sensors via Monte-Carlo Modelling and Measurements

“…This finding strengthens the integrity of the approximation followed in this paper, namely the "semi-empirical" modelling, viz., Monte-Carlo modelling fed with experimental measurements. Accounting the criticism of the method of Doerschel and Piesch [13] from several researchers [5,7,[16][17][18][19][20][21] the fit result of calculated F values verified, more or less, this criticism. No other F -calculation approaches [6,7.14,18,21] were attempted, despite that some of these could provide better estimation of F -values.…”

“…Nevertheless, the approach of this paper outweighs in one fact; the actual measurements of F. In addition, the overall Monte-Carlo modelling constitutes a new approach to previous simulations [16,[18][19][20][21][22][23][24][25][26], most importantly, by taking into account the latest version of SRIM software, namely SRIM 2013. Apart from the work of Rezaie and Rezaie, et al [22,23] which also used SRIM, all previous modelling for use of nuclear track detectors in long term estimation of F, followed completely other approximations [17,18] or mathematical-analytical models [16,24,25]. However, despite the different approximations, the findings of this paper could be useful for alternative long-term estimation of F or Monte-Carlo modelling of cup-type, bare detectors or other detector installations.…”

“…While radon's concentration is unequivocally estimated, it is not so direct to estimate the progeny's equilibrium factor and PAEC from the track density of bare detectors. When the environment predominantly consists of radon and its progeny, a unique relationship as the one of equation ( 12) can be established between equilibrium factor values and the ratio of the cup to bare detector track densities [3][4][5][6][7]14,[16][17][18][19][20][21].…”

“…The solution enabled calculation of F as a function of λ v , namely F = F (λ v ). Similar approach has been followed previously as well [3,7,12,13,16,17].…”

Digital holographic microscopy for recording and analysis of 3D images of etched tracks in LR-115 SSNTD

“…To minimize the uncertainties associated with the identification of genuine tracks, only those tracks that completely perforated the active layer of the LR-115 detector are analyzed. It was demonstrated that geometrical track parameters and partial sensitivities of LR-115 detectors strongly depend on the removed active layer thickness during the etching process [18,19]. Therefore, the residual thickness of the etched LR-115 detector should be monitored carefully.…”