Browsing by Author "Bircan, Hasan"

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    Citation - WoS: 8
    Citation - Scopus: 8
    Indoor Radon Activity Concentration and Effective Dose Rates at Schools and Thermal Spas of Ilgin
    (VINCA INST NUCLEAR SCI, 2020) Erdoğan, Mehmet; Abaka, Murat; Manisa, Kaan; Bircan, Hasan; Kuş, Coşkun; Zedef, Veysel
    Indoor radon activity concentrations and radon doses on the ground floor and basement floor of 19 schools (kindergardens, primary schools, secondary schools, and high schools) and thermal spas of Ilgin district in Konya, have been measured using the AlphaGUARD PQ 2000PRO radon detector, for three days in the first half of 2016. According to the results, while the indoor radon concentration for only one location, in total, is above the Turkish action level of 400 Bqm(-3), the values for 10 locations are above the reference level of 100 Bqm-3, recommended by WHO. The calculated annual effective doses for inhalation of the radon in indoor air were also found to be 0.26 mu Sv for the minimum and 4.36 mu Sv for the maximum. The parametric distribution analysis is also performed with 3-parameter Weibull distribution and some remarks are provided on radon concentration activity.
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    Citation - WoS: 5
    Citation - Scopus: 7
    Variations of 222rn Concentrations Over Active Fault System in Simav, Kütahya, Western Turkey: Possible Causes for Soil-Gas 222rn Anomalies
    (Elsevier Ltd, 2022) Manisa, Kaan; Erdoğan, Mehmet; Zedef, Veysel; Bircan, Hasan; Biçer, Aahmet
    Soil-gas 222Rn concentrations were investigated on an active Simav Graben/Fault System in Western Turkey. Measurements to understand the causes of variations in soil-gas 222Rn were conducted in three distinct sections such that seven selected measurement points in each section lie on a line that is approximately perpendicular to the main fault line. It was found out in each section that values obtained at two adjacent points were abnormally higher than the rest. The corresponding concentrations were measured as 60.76–63.93 kBq/m3, 33.00–45.78 kBq/m3, and 56.20–84.69 kBq/m3 on the first, second, and third lines, respectively. These values, which differ significantly from measurements conducted on a similar line, are thought to be stemming from crustal stress caused by faulting or acidic-intrusive rocks in the region. © 2022 Elsevier Ltd