Background: Inhalation of radon and its short-lived decay products is one of the ‎most significant sources of exposure to natural radiation. Radon is the second cause ‎of lung cancer in the populations. The present study was carried out under the projects of ‎national radon, with the aim of determining the concentration of indoor in the city of Qom ‎located in the central se...

The lung dose contributed from thoron (Rn) and its progeny was usually neglected in the dose assessment because of the generally low concentrations. Recently, increased concentrations of Rn and its progeny were measured in the traditional residential dwellings in China, in dwellings in India and in other countries. The potential alpha energy concentration contributed from Rn and its decay produ...

background: radon concentration was measured in the soil and indoor of amman and al- rusaifa cities in jordan during summer season. materials and methods: the measurement was performed using time-integrated passive radon dosimeters, containing a solid state nuclear track plastic detector, commercially known as cr-39. results: radon concentration levels in the soil ranged from 2.8 ± 1.2 to 6.9 ±...

Recently, some commercially available active-type radon–thoron monitors were developed; however, their performance has not been characterized. This article presents the characteristics of three (RAD7, Radon Mapper, and AlphaGUARD) at different sampling flow rates. The thoron concentration measured by was compared with reference value a grab method. As result, ratio to increased rate for RAD7 Ma...

the paper discusses the results of 30 years of radon indoor entry research. while some progress has been made, many discrepancies between current theories and experimental data still remain. misconceptions of radon transport mechanisms in homes are analyzed. the role of us environmental protection agency in radon indoor entry research is examined and the agency's policies are criticized. t...

The paper discusses the results of 30 years of radon indoor entry research. While some progress has been made, many discrepancies between current theories and experimental data still remain. Misconceptions of radon transport mechanisms in homes are analyzed. The role of US Environmental Protection Agency in radon indoor entry research is examined and the agency's policies are criticize...

Among numerous applications of Solid-State Nuclear Track Detector (SSNTD), one important application is estimating radon and thoron concentration in an indoor environment. The primarily used SSNTD for this LR-115. Studying the behaviour these SSNTDs different etching solutions essential. In report, Lithium hydroxide solution was to etch LR-115 SSNTD. study thickness film removed carried out at ...

Background: The current study reports measurements of activity concentrations radon (<sup>222</sup>Rn) and thoron (<sup>220</sup>Rn) in dwellings, followed by inhalation dose assessment the public, then development regulation national action plan (NRAP) Cameroon.Materials Methods: Radon, thoron, progeny were carried out from 2014 to 2017 using radon-thoron discriminative...