Carborne gamma-ray spectrometry. Calibration and applications

Aage, Helle Karina; Korsbech, Uffe C C; Bargholz, Kim; Hovgaard, Jens

doi:10.1016/j.apradiso.2006.03.013

Cited by 10 publications

(6 citation statements)

References 5 publications

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“…Aage et al, 2006;Karlsson et al, 2000). The most difficult issue with a car-borne system is to determine a function that converts from measured to quantitatively meaningful values, for example the conversion function from obtained gamma-ray peak intensity to surface deposition density.…”

Section: Introductionmentioning

confidence: 94%

Radioactive contamination mapping of northeastern and eastern Japan by a car-borne survey system, Radi-Probe

Kobayashi¹,

Shinomiya²,

Kitamura³

et al. 2015

Journal of Environmental Radioactivity

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Section: Introductionmentioning

confidence: 94%

Radioactive contamination mapping of northeastern and eastern Japan by a car-borne survey system, Radi-Probe

Kobayashi¹,

Shinomiya²,

Kitamura³

et al. 2015

Journal of Environmental Radioactivity

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“…Utilising this technique, measurements can be made directly in the field using a variety of gamma-ray detectors mounted to a specific platform such as static surveyor stands (in situ) (Gering et al, 1998), vehicles (carborne) (Aage et al, 2006), airborne (helicopters and fixed wing) (Rawlins et al, 2011) and unmanned aerial vehicle (UAVs) (Okuyama et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Reconstructing the deposition environment and long-term fate of Chernobyl 137Cs at the floodplain scale through mobile gamma spectrometry

Varley

Tyler

Bondar

et al. 2018

Environmental Pollution

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Cs-137 is considered to be the most significant anthropogenic contributor to human dose and presents a particularly difficult remediation challenge after a dispersal following nuclear incident. The Chernobyl Nuclear Power Plant meltdown in April 1986 represents the largest nuclear accident in history and released over 80 PBq of Cs into the environment. As a result, much of the land in close proximity to Chernobyl, which includes the Polessie State Radioecology Reserve in Belarus, remains highly contaminated with Cs to such an extent they remain uninhabitable. Whilst there is a broad scale understanding of the depositional patterns within and beyond the exclusion zone, detailed mapping of the distribution is often limited. New developments in mobile gamma spectrometry provide the opportunity to map the fallout ofCs and begin to reconstruct the depositional environment and the long-term behaviour of Cs in the environment. Here, full gamma spectrum analysis using algorithms based on the peak-valley ratio derived from Monte Carlo simulations are used to estimate the totalCs deposition and its depth distribution in the soil. The results revealed a pattern of Cs distribution consistent with the deposition occurring at a time of flooding, which is validated by review of satellite imagery acquired at similar times of the year. The results were also consistent with systematic burial of the falloutCs by annual flooding events. These results were validated by sediment cores collected along a transect across the flood plain. The true merit of the approach was confirmed by exposing new insights into the spatial distribution and long term fate of Cs across the floodplain. Such systematic patterns of behaviour are likely to be fundamental to the understanding of the radioecological behaviour ofCs whilst also providing a tracer for quantifying the ecological controls on sediment movement and deposition at a landscape scale.

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“…The facility of environmental dose rate monitoring system using mobile equipment is essential for an effective response to any major nuclear emergency. Geographical distribution of radioactive contamination in most nuclear emergencies is essential to be presented quickly to the authorities for protecting public health and safety [7][8][9][10][11].…”

Section: Atom Indonesiamentioning

confidence: 99%