State-of-the-Art Mobile Radiation Detection Systems for Different Scenarios

Marques, L.; Vale, Alberto; Vaz, P.

doi:10.3390/s21041051

Cited by 71 publications

(51 citation statements)

References 179 publications

(320 reference statements)

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“…In this system, larger monolithic LYSO rings can be fabricated to improve the key performance index, such as the sensitivity and decoding performance. Moreover, concise sensing can be carried out by a robot to reach dangerous radiation environments, which is useful for the detection of radiation leakage [ 29 ].…”

Section: Discussionmentioning

confidence: 99%

A Novel Portable Gamma Radiation Sensor Based on a Monolithic Lutetium-Yttrium Oxyorthosilicate Ring

Zhang

Xie

et al. 2021

Sensors

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Portable radiation detectors are widely used in environmental radiation detection and medical imaging due to their portability feature, high detection efficiency, and large field of view. Lutetium-yttrium oxyorthosilicate (LYSO) is a widely used scintillator in gamma radiation detection. However, the structure and the arrangement of scintillators limit the sensitivity and detection accuracy of these radiation detectors. In this study, a novel portable sensor based on a monolithic LYSO ring was developed for the detection of environmental radiation through simulation, followed by construction and assessments. Monte Carlo simulations were utilized to prove the detection of gamma rays at 511 keV by the developed sensor. The simulations data, including energy resolutions, decoding errors, and sensitivity, showed good potential for the detection of gamma rays by the as-obtained sensor. The experimental results using the VA method revealed decoding errors in the energy window width of 50 keV less than 2°. The average error was estimated at 0.67°, a sufficient value for the detection of gamma radiation. In sum, the proposed radiation sensor appears promising for the construction of high-performance radiation detectors and systems.

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Section: Discussionmentioning

confidence: 99%

A Novel Portable Gamma Radiation Sensor Based on a Monolithic Lutetium-Yttrium Oxyorthosilicate Ring

Zhang

Xie

et al. 2021

Sensors

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“…which is the linear system of algebraic equations with respect to σ q . The function G is defined by (7).…”

Section: Inverse Problemmentioning

confidence: 99%

“…To organize the effective control and correct handling of radioactive materials and to provide the radiation safety, small flying machines or so-called unmanned aerial vehicles (UAVs) began to apply widely. The advantages [5][6][7][8][9][10][11] of this approach are well known. Among them are:…”

Section: Introductionmentioning

confidence: 99%

Mathematical aspects of remote assessment of the radiation state of contaminated areas

Zabulonov

Popov²,

Skurativskyi³

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The use of radioactive materials is widespread in scientific investigations and various sectors of the economy. There are also extremely radiation-hazardous objects, for instance the well-known Chornobyl Exclusion Zone (Chornobyl, Ukraine) covering the large contaminated areas and the Shelter Object containing the materials of huge radioactivity of about 20 MCi. To safe handling with such objects and materials, the correct their monitoring, detection and characteristics evaluation are vital. The modern development of small flying machines, measurement equipment, and information technologies allow one to increase the amount of measurement data and their accuracy, and to reduce the processing time. On the other hand, the requirements to accuracy, quickness, and correctness of data interpretation increase as well. To solve these problems effectively, the mathematical tools of data processing should be improved. The main mathematical problem at the remote evaluation of radioactive fields relates to the solving the inverse problem for the Fredholm integral of the first kind. In this research, we consider the reconstruction of surface density of gamma radiation on the ground using the data of aerial shooting. We survey the methods for solving the inverse problem, their advantages and disadvantages. The adaptation of the methods to the reconstruction of nonstationary discontinuous radioactive fields is presented. We modify the numerical algorithms using the opportunities of modern calculating software. In particular, it is considered the task when the algorithm reconstructs the density distribution very well.

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“…Figures 2 and 8 illustrate scan setup and results for stationary deployments, either on a tripod (Figure 2a) or on a robotic manipulator in active industrial environments (Figure 2b). However, because of its compact form factor and reduced weight compared to other solutions described in [9], along with its ability to make 360 • scans with an angular inclination from −40 • to 90 • , CC-RIAS is also well suited for mobile deployments [23]. To demonstrate this capability, CC-RIAS was mounted on a wheeled rover equipped with a ROS framework for Simultaneous Localisation and Mapping (SLAM).…”

Section: Mobile Deploymentsmentioning

confidence: 99%

Miniaturised Low-Cost Gamma Scanning Platform for Contamination Identification, Localisation and Characterisation: A New Instrument in the Decommissioning Toolkit

Verbelen

Martin

Ahmad³

et al. 2021

Sensors

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Formerly clandestine, abandoned and legacy nuclear facilities, whether associated with civil or military applications, represent a significant decommissioning challenge owing to the lack of knowledge surrounding the existence, location and types of radioactive material(s) that may be present. Consequently, mobile and highly deployable systems that are able to identify, spatially locate and compositionally assay contamination ahead of remedial actions are of vital importance. Deployment imposes constraints to dimensions resulting from small diameter access ports or pipes. Herein, we describe a prototype low-cost, miniaturised and rapidly deployable ‘cell characterisation’ gamma-ray scanning system to allow for the examination of enclosed (internal) or outdoor (external) spaces for radioactive ‘hot-spots’. The readout from the miniaturised and lead-collimated gamma-ray spectrometer, that is progressively rastered through a stepped snake motion, is combined with distance measurements derived from a single-point laser range-finder to obtain an array of measurements in order to yield a 3-dimensional point-cloud, based on a polar coordinate system—scaled for radiation intensity. Existing as a smaller and more cost-effective platform than presently available, we are able to produce a millimetre-accurate 3D volumetric rendering of a space—whether internal or external, onto which fully spectroscopic radiation intensity data can be overlain to pinpoint the exact positions at which (even low abundance) gamma-emitting materials exist.

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State-of-the-Art Mobile Radiation Detection Systems for Different Scenarios

Cited by 71 publications

References 179 publications

A Novel Portable Gamma Radiation Sensor Based on a Monolithic Lutetium-Yttrium Oxyorthosilicate Ring

A Novel Portable Gamma Radiation Sensor Based on a Monolithic Lutetium-Yttrium Oxyorthosilicate Ring

Mathematical aspects of remote assessment of the radiation state of contaminated areas

Miniaturised Low-Cost Gamma Scanning Platform for Contamination Identification, Localisation and Characterisation: A New Instrument in the Decommissioning Toolkit

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