Investigation of natural gamma radiation dose rate (GDR) levels and its relationship with soil type and underlying geological formations in Jordan

2019 ◽  
Vol 155 ◽  
pp. 32-42
Author(s):  
Ahmad Hussein Alomari ◽  
Muneer Aziz Saleh ◽  
Suhairul Hashim ◽  
Amal Alsayaheen
Keyword(s):  
Radiation Dose ◽  
Gamma Radiation ◽  
Dose Rate ◽  
Soil Type ◽  
Radiation Dose Rate ◽  
Natural Gamma ◽  
Gamma Radiation Dose ◽  
Geological Formations

scholarly journals Terrestrial Gamma Radiation Dose Rate of West Sarawak

2017 ◽  
Vol 156 ◽  
pp. 00006
Author(s):  
A. Izham ◽  
A.T. Ramli ◽  
W.M. Saridan Wan Hassan ◽  
H.N. Idris ◽  
N.A. Basri
Keyword(s):  
Radiation Dose ◽  
Gamma Radiation ◽  
Dose Rate ◽  
Radiation Dose Rate ◽  
Gamma Radiation Dose

The rain induced gamma-radiation dose rate enhancement at Järvselja SMEAR station

2021 ◽  
Author(s):  
Urmas Hõrrak ◽  
Xuemeng Chen ◽  
Kristo Hõrrak ◽  
Uko Rand ◽  
Kaupo Komsaare ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Gamma Radiation ◽  
Dose Rate ◽  
Atmospheric Aerosol ◽  
Aerosol Particles ◽  
Aerosol Formation ◽  
Radiation Dose Rate ◽  
Air Mass ◽  
Rate Enhancement ◽  
Gamma Radiation Dose

<p>The SMEAR Estonia station (58.277663 N, 27.308266 E, 36 m a.s.l.) was established in south-east of Estonia at the Järvselja Experimental Forestry in 2012 to investigate the atmosphere-biosphere interactions and atmospheric aerosol formation and growth.</p><p>In summer 2019, the gamma-radiation monitor GammaTRACER XL2-3 (Saphymo GmbH) was set up at Järvselja station and the rain sensor DRD11A (Vaisala Oyj) in autumn 2019. These devices enable to measure the gamma-radiation dose rate and precipitation intensity, which affect the ionization rate of atmospheric air close to ground, with high accuracy and time resolution, and complement our measurement system of atmospheric ions and aerosol particles.</p><p>The gamma-radiation dose rate measurements at about 1.2 m above the ground reveled on relatively steady background about 70 nSv/h occasional events with increase up to about 110 nSv/h, which correlated well with rainfall intensity. Commonly such events last 3-4 hours, but in specific meteorological situation with continuous long-lasting rain and air mass movement from southerly directions the effect can last 2-3 days, resulting in gradual increase in gamma-radiation dose rate level during about 24 h.</p><p>Such a phenomenon is known to occur due to wet deposition of radioactive aerosol particles during rain, namely due to the radon (<sup>222</sup> Rn) short-lived daughter progeny products (Po-218, Pb-214, Bi-214) attached to atmospheric aerosol particles. The radon (<sup>222</sup> Rn) daughter progeny involvement is confirmed by simultaneous gamma-spectrometric measurements with SARA AGS711F (Envinet GmbH) at Tõravere station (58° 15' 52,9" N, 26° 27' 42,1", 72 m), located about 50.3 km west from the Järvselja SMEAR station. The gamma dose rates showed very similar temporal behavior when both stations were affected by the same air mass with precipitation zone passing over the stations.</p><p>To our best knowledge, the details of rain-induced enhancement of gamma-radiation dose rate and atmospheric processes behind the phenomenon are not well known and are worth future investigations. The events of rain induced gamma-radiation dose rate enhancement at Järvselja SMEAR and Tõravere station are analyzed and discussed in more detail in the presentation and the spatial representativity of the phenomenon is estimated based on the gamma-radiation monitoring network data of Estonian Early Warning System.</p>

Isodose mapping of terrestrial gamma radiation dose rate of Selangor state, Kuala Lumpur and Putrajaya, Malaysia

2014 ◽  
Vol 135 ◽  
pp. 67-74 ◽  
Author(s):  
M.S.M. Sanusi ◽  
A.T. Ramli ◽  
H.T. Gabdo ◽  
N.N. Garba ◽  
A. Heryanshah ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Gamma Radiation ◽  
Dose Rate ◽  
Kuala Lumpur ◽  
Radiation Dose Rate ◽  
Gamma Radiation Dose
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