Response of a new charcoal-etched radon track dosimeter

Šutej, T.; Ilić, R.; Križman, Manja

doi:10.1016/0969-8078(93)90245-y

Cited by 10 publications

(6 citation statements)

References 6 publications

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“…CR-39 A passive device based on track registration with a sufficiently large response for said measurements has been reported by Sutej et al (1993), who proposed to use a track detector adjacent to activated charcoal.…”

Section: Pe Bagmentioning

confidence: 97%

Radon-film-badges by solid radiators to complement track detector-based radon monitors

Tommasino¹,

Tommasino²,

Viola³

2009

Radiation Measurements

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Section: Pe Bagmentioning

confidence: 97%

Radon-film-badges by solid radiators to complement track detector-based radon monitors

Tommasino¹,

Tommasino²,

Viola³

2009

Radiation Measurements

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“…The track detector/AC monitor proposed by Sutej et al [9] had also some shortcomings such as its response sensitivity, which may depend on the particular time of the exposure, especially because the activated charcoal is used as a non-equilibrium-type sampler [4]. The equilibrium-type of sampling by using thin layers of activated carbon adjacent to a track detector of Van Deynse et al [10] has also been subject to some shortcomings such as high cost, practical difficulties due to their grain-type morphology, and humidity-dependent adsorption characteristics [4].…”

Section: Discussionmentioning

confidence: 99%

“…One of the main problems in using passive radon monitors based on bare polymers with no external irradiator has been lack of enough sensitivity for short-term radon measurements indoors and outdoors requiring monitoring periods sometimes up to 6 months. Efforts have been in progress to enhance the sensitivity of such detectors by applying an external adsorbing material such as activated charcoal (AC) powder or in layers in contact with a polymer track detector [4,9,10]. Sutej et al [9] by using CR-39/AC layer first reported a two times higher sensitivity enhancement compared to that of bare CR-39.…”

Section: Introductionmentioning

confidence: 99%

“…Efforts have been in progress to enhance the sensitivity of such detectors by applying an external adsorbing material such as activated charcoal (AC) powder or in layers in contact with a polymer track detector [4,9,10]. Sutej et al [9] by using CR-39/AC layer first reported a two times higher sensitivity enhancement compared to that of bare CR-39. The AC material adsorbs radon from air and in turn bombards the CR-39 by alpha particles from radon and progeny.…”

Section: Introductionmentioning

confidence: 99%

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Concentration and duration dependence of a new prototype polycarbonate/activated-carbon fabric individual and environmental radon monitor

Sohrabi

Ebrahiminezhad

2018

J. Inst.

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The basic design of new multi-purpose polycarbonate track detector (PCTD)/activated-carbon-fabric (ACF) detector for radon monitoring in particular for parametric studies has been recently self-invented in our laboratory by enhancing PCTD's sensitivity by using the ACF adsorptive layer as external alpha radiator. The PCTD/ACF monitor basically consists of a PCTD; half bare and half covered with ACF in order to adsorb radon on its carbon active sites. From parameters studied, radon concentration and exposure duration were discovered to be the most important parameters affecting the monitor's sensitivity enhancement. An amplification factor (AF), defined as ratio of net PCTD/ACF to PCTD/bare alpha track density responses after background track density subtraction, was found being highly dependent on the two stated parameters. The AF versus duration response is flat with a value ∼1.5 constant up to 32 days in ∼180±20 Bq.m−3 radon environment and also flat with a constant value ∼7.5 up to 8 days in ∼25±1.1 kBq.m−3 radon environment after which the AF decreases down to ∼3.0 up to 32 days exposure. This phenomenon seems be due to full occupancy of radon atoms on the ACF active sites at high concentrations with an equilibrium between adsorption and desorption processes. The latter significantly dominates after 8 days in ∼25±1.1 kBq.m−3 environment leaving behind non-active sites requiring regeneration. The prototype monitor developed can be applied to normal level individual and/or environmental radon monitoring for an extended period of time but to high radon concentrations for short-term such as a week as a “grab sampler” with a high prospect for determination of radon equilibrium factor with its progeny in the radon environment under measurement. The actual radon monitor and its parametric studies are under further development.

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“…It should be noted that this value roughly corresponded to the radon sensitivity (with the microscope) 13,14) multiplied by the ratio η. It was confirmed that the present system could be satisfactorily used for the radon monitoring at many positions.…”

Section: Radon Monitoring In Basementmentioning

confidence: 99%

Performance of Convenient Film Scanner System for Automatic Counting of Track Etched Pits on PADC Detectors

Maki

Sato

Murata

et al. 2010

Radiat. Safety. Manag.

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A commercially available film scanner and image processing software "ImageJ" were satisfactorily used for automatic counting of track etched pits on a PADC detector irradiated with a-rays. The performance of the a-ray counting system with the film scanner was examined by the use of a goniometric a-ray irradiation equipment. Under the etching condition of the soakage in 6.25M NaOH solution at 70ºC for 20 hours, the a-ray detection efficiency of the film scanner system was about 0.6 time as small as that of the general system with an optical microscope. It was confirmed that PADC detectors together with the film scanner system could be conveniently used for radon monitoring in atmosphere.

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Response of a new charcoal-etched radon track dosimeter

Cited by 10 publications

References 6 publications

Radon-film-badges by solid radiators to complement track detector-based radon monitors

Radon-film-badges by solid radiators to complement track detector-based radon monitors

Concentration and duration dependence of a new prototype polycarbonate/activated-carbon fabric individual and environmental radon monitor

Performance of Convenient Film Scanner System for Automatic Counting of Track Etched Pits on PADC Detectors

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