Calibration of CR-39 for different heights of radon dosimeters and application of radon concentration in Mahajran River sediment in Basra Governorate, Iraq

Jebur, Jabbar H.; H, Subber Abdul R; Saadon, Wejood Tuama

doi:10.1088/1742-6596/1294/2/022013

Cited by 3 publications

(1 citation statement)

References 17 publications

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“…This method is highly recommended by CR-39 producers (British company). Due to its accurate results, several scientists are published recent articles using the CR-39 dosimeter method for example köç, et al, (2017) andJebur et al (2019).…”

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confidence: 99%

ENRICHMENT OF RADON (222Rn) CONCENTRATION IN REMAH VOLCANO, NE-JORDAN

Al-Malabeh

Hamed

2020

IGJ

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Remah Volcano (RV) is one of the numerous volcanoes that are distributed in three volcanic fields in the Jordanian Harrat, northeast Jordan. The RV is about 4 km 2. It is about 80 m high. They are arranged in three main horizons: lower, middle, and upper and show planar stratification. 222 Rn content has been measured by using Nuclear Track Detector (Columbia Resin CR-39) studied rocks show that the range from 945-1283 (Bq/m 3) and the average of 1104.46 (Bq/m 3), the highest content of 1175-1283 (Bq/m 3), is recorded in the samples from the upper horizon from RV. 222 Rn ranges between 1049-1125 (Bq/m 3) as shown in the middle horizon and have contents of 945-999 (Bq/m 3), in the lower horizon. The 238 U concentrations increase gradually upwards, respectively. This study concludes that the correlating of contents of 238 U contents with 222 Rn concentrations results obtained in this study it's clear that the 222 Rn-concertation shows a distinct increase as 238 U contents increases. This can lead to the conclusion that the 238 U-decay is the main source that is produced 222 Rn from the interstitial glass which resulted from residual melt in tephra rather than from emission of inferred source in cracks and fractured of inferred faults.

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ENRICHMENT OF RADON (222Rn) CONCENTRATION IN REMAH VOLCANO, NE-JORDAN

Al-Malabeh

Hamed

2020

IGJ

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Measurement of radon-222 and uranium-238 concentrations in Gharraf Canal sediments in Thi-Qar, Iraq

Hammood¹,

Salman²,

Abbas

2020

International Conference of Numerical Analysis and Applied Mathematics Icnaam 2019

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CR-39 detector-based Radon dosimetry system calibration in the self-decay mode

Lüley

Filova

Blahušiak

et al. 2023

Eur. Phys. J. Spec. Top.

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This paper describes cooperation of the Slovak University of Technology in Bratislava (STU) and the Slovak Institute of Metrology (SMU) in the verification of the calibration factors for the solid-state nuclear track detector utilized for radon dosimetry and establishing traceability for the STU laboratory. The SMU operates the Air Radon Standard which consists of a radon chamber and calibrated radon atmosphere monitoring system. A specification of the radon chamber is that the radon concentration changes during the exposure time. The radon atmosphere is created by the insertion of a specified amount of radon gas into the chamber, which subsequently decays over time. The STU laboratory is equipped with the TASLImage™ system for radon dosimetry with corresponding TASTRAK CR-39 type detectors and diffusion chambers. These chambers allow radon to diffuse inside and prevent dust and radon progeny to enter the container. Each diffusion container is characterized by its own diffusion rate, which should be considered in the metrology calibration approach, especially when the radon chamber is operated in the decay mode. Therefore, several measurements were carried out to determine the optimal condition for conversion factor verification. The experiments were conducted for low radon concentrations, but still in the range that the radon chamber can reliably provide (100 Bq m−3 to 100 kBq m−3) and in combination with several times of exposure. Based on the achieved results the default calibration factor was verified, and an optimal calibration approach was proposed. To improve the capability of the radon measurement, a custom diffusion container design was proposed. The design incorporates compact dimensions with an aerosol filter at the entrance to the container. This allows to increase in an entry hole and thus increases the diffusion rate. Subsequently, the homogeneity of the radon atmosphere in the chamber was tested.

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Calibration of CR-39 for different heights of radon dosimeters and application of radon concentration in Mahajran River sediment in Basra Governorate, Iraq

Cited by 3 publications

References 17 publications

ENRICHMENT OF RADON (222Rn) CONCENTRATION IN REMAH VOLCANO, NE-JORDAN

ENRICHMENT OF RADON (222Rn) CONCENTRATION IN REMAH VOLCANO, NE-JORDAN

Measurement of radon-222 and uranium-238 concentrations in Gharraf Canal sediments in Thi-Qar, Iraq

CR-39 detector-based Radon dosimetry system calibration in the self-decay mode

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