Etched track radiometers in radon measurements: a review

Nikolaev, V. A.; Ilić, R.

doi:10.1016/s1350-4487(98)00086-9

Cited by 98 publications

(33 citation statements)

References 108 publications

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“…A recent review of application of track detectors for radon measurements has been given by Nikolaev and Ilic [112]. The first mode employs ''open'' or bare detectors where the detectors are simply immersed in the air at the location where the measurements are conducted.…”

Section: Radon Measurements With Track Detectorsmentioning

confidence: 99%

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Formation and growth of tracks in nuclear track materials

Nikezić

2004

Materials Science and Engineering: R: Reports

372

163

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This paper reviews some aspects of solid-state nuclear track detectors (SSNTDs) and their applications in the radon and other research fields. Several geometrical models for the track growth given in the literature are described and compared. It is found that different models give close results for the dimensions of track openings.One of the main parameters that govern track formation is the bulk etch rate V b . Dependences of V b on different parameters such as the preparation procedures, etching conditions, irradiation before etching, etc. are examined. A review of existing methods for determination of the bulk etch rate and track etch rate V t is also given. Examples of V t functions for some detectors are presented. Some unsolved questions related to V t and some contradictory experimental results published in the literature are also summarized in the paper.Applications of SSNTDs for radon and progeny measurements are discussed. New designs of diffusion chambers that have appeared in the last few years are portrayed. A review of analytical and Monte Carlo methods for the calculation of the calibration factors in radon measurements is presented.Particular attention has been given to methods of long-term passive measurements of radon progeny with SSNTDs. These measurements are rather difficult and there is not yet a widely accepted solution. One possible solution based on the LR 115 SSNTD is outlined here.Methods for retrospective radon measurements are also described. Various applications of SSNTDs in other fields of physics and other sciences are briefly reviewed at the end of the paper. #

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Section: Radon Measurements With Track Detectorsmentioning

confidence: 99%

“…A review of different designs of diffusion chambers described in the literature is given by Nikolaev and Ilic [112], and no review is given here again. Regarding the shape, the diffusion chambers can be cylindrical, rectangular, conical or hemispherical.…”

Section: Radon Measurements With Closed Detectorsmentioning

confidence: 99%

Formation and growth of tracks in nuclear track materials

Nikezić

2004

Materials Science and Engineering: R: Reports

372

163

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“…Many authors [10,11] investigated the sensitivity of LR-115-II detector on the thickness of the removed layer and it was established that the thickness of the removed layer is a deceive parameter but the characteristics of the dependence at different temperatures were not studied properly. In order to study these characteristics, a set of 15 detectors were placed in a well-closed container which contains a garnet sample.…”

Section: Repercussion Of α Autoradiographymentioning

confidence: 99%

Direct determination of bulk etching rate for LR-115-II solid state nuclear track detectors

Salama¹,

Seddik²,

Hegazy

et al. 2006

Pramana - J Phys

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The thickness of the removed layer of the LR-115-II solid state nuclear track detector during etching is measured directly with a rather precise instrument. Dependence of bulk etching rate on temperature of the etching solution is investigated. It has been found that the bulk etching rate is 3.2 µm/h at 60 • C in 2.5 N NaOH of water solution. It is also found that the track density in detectors exposed to soil samples increases linearly with the removed layer.

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“…The lifetime risk associated with exposure to indoor radon was calculated using 1 WLM = 10 × 10 −6 cases/year. If the risk persists for 30 years, the lifetime fatality risk is 3 × 10 −4 cases/ WLM (Nikolaev and Ilic 1999). Hence, the conversion factors of 3 × 10 −4 per WLM and 3.88 mSv per WLM (ICRP 1993b) were used to estimate the lifetime fatality risk and the annual effective dose, respectively.…”

Section: Dosimetry Of Radon Progeny / Daughtersmentioning

confidence: 99%

Estimates of the dose of radon and its progeny inhaled inside buildings

Ravikumar

Somashekar

2013

European Journal of Environmental Sciences

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The concentration of radon in the air in buildings ranged from 1.87 ± 3.24 Bq/m 3 to 14.27 ± 1.50 Bq/m 3 with a mean of 6.31 ± 3.47 Bq/m 3 while that of the progeny of radon varied from 0.007 to 0.057 WL (average: 0.025). The mean indoor concentration of radon was considerably less than the lower levels prescribed by EPA (148 Bq/m 3 ), WHO (100 Bq/m 3 ), EEC (400 Bq/m 3 ), ICRP (200-600 Bq/m 3 ) and NRPB (200 Bq/m 3 ). The annual effective equivalent dose of indoor radon (< 0.8 mSv/y) that the bronchial and pulmonary regions of human lungs are exposed to (<0.8 mSv/y) is less than the UNSCEAR and WHO recommended global lower average dose value of 1 mSv/y. The lifetime fatality risk of exposure to the progeny of radon (PAEC) varied from 0.03 × 10 −4 to 0.19 × 10 −4 , with an average value of 0.08 ± 0.04 × 10 −4 .

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Etched track radiometers in radon measurements: a review

Cited by 98 publications

References 108 publications

Formation and growth of tracks in nuclear track materials

Formation and growth of tracks in nuclear track materials

Direct determination of bulk etching rate for LR-115-II solid state nuclear track detectors

Estimates of the dose of radon and its progeny inhaled inside buildings

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