Advances in gamma radiation detection systems for emergency radiation monitoring

Kumar, K. Ashok; Sundaram, G. A. Shanmugha; Sharma, B. K.; Venkatesh, S.; Thiruvengadathan, Rajagopalan

doi:10.1016/j.net.2020.03.014

Cited by 41 publications

(16 citation statements)

References 83 publications

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“…[ 1,2 ] Among the multitudinous research fields of the hybrid perovskite, the photovoltaic field has achieved remarkable results. The power conversion efficiency (PCE) of solar cells based on hybrid perovskite materials has increased from 3.8% in 2009 [ 3 ] to the 25.2% (certified) in 2019, [ 4 ] which is comparable with the PCE of the traditional silicon solar cells. But the former has a huge advantage over the latter in terms of low‐cost manufacturing and raw materials.…”

Section: Introductionmentioning

confidence: 99%

A High Seebeck Voltage Thermoelectric Module with P‐type and N‐type MAPbI₃ Perovskite Single Crystals

Xie

Feng

Xiong

et al. 2021

Adv Elect Materials

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In recent years, organic–inorganic hybrid halide perovskite materials have been found to have low thermal conductivity and a large Seebeck effect, giving them great potential for thermoelectric applications. More stable single crystals make this possible. In this work, high‐quality MAPbI3 single crystals are prepared using a modified solvent engineering method, and their trap density is as low as 2.5 × 109 cm−3. It is noticed that the reaction between the crystal a metal electrode causes different degrees of doping effect along the vertical direction, leading to an increase in the intrinsic P‐type with Au metal, and forming N‐type semiconductor characteristics with Ag metal. A high Seebeck voltage thermoelectric module is obtained by combining the perovskite single crystal with different conductive characteristics. After device optimization, the thermoelectric potential of the champion module reaches a high voltage of 337 mV at 115 °C, the maximum output power with load reaches about 30 nW, and the theoretical maximum power reaches 65 nW. It is hoped that this research can promote the development of low thermal conductivity perovskite materials in the thermoelectric field.

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Section: Introductionmentioning

confidence: 99%

A High Seebeck Voltage Thermoelectric Module with P‐type and N‐type MAPbI₃ Perovskite Single Crystals

Xie

Feng

Xiong

et al. 2021

Adv Elect Materials

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“…Gas-filled detectors, like the Geiger–Muller (GM) detector, are used to obtain the radiation dose rate. Some critical characteristics that measure the effectiveness of a radiation detector are: the energy resolution, correlated with the intensity of the light yield, counting efficiency which is related to the crystal ability to attenuate photons which depends on the incident gamma energy and is proportional to both the density and the atomic number of the material, and inherent dead time [ 16 , 43 ].…”

Section: Mobile Radiation Detection Systemsmentioning

confidence: 99%

“…While there are some papers already published about these topics, they cover only a part of the scope of this work, thus missing the interconnection between different scenarios or the reference of either neutron or gamma detection systems. Kumar et al (2020) [16] presented the recent developments in radiation detection systems used in ground and air-based platforms for emergency radiation monitoring scenarios (radiation contamination resulting from nuclear accidents); Connor et al [17] described the aerial platforms used in airborne radiation mapping and perspectives; [18] presented the unmanned systems with potential to be used for radiation measurements and sampling; Ihantola et al [12,19] describes the recent detection technologies for nuclear security and their impact; Cieślak et al [20] and Hamrashdi et al [21] presented a review of gamma and neutron imagers, the latter also included a review of passive gamma ray detection.…”

Section: Introductionmentioning

confidence: 99%

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

Marques

Vale

Vaz

2021

Sensors

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In the last decade, the development of more compact and lightweight radiation detection systems led to their application in handheld and small unmanned systems, particularly air-based platforms. Examples of improvements are: the use of silicon photomultiplier-based scintillators, new scintillating crystals, compact dual-mode detectors (gamma/neutron), data fusion, mobile sensor networks, cooperative detection and search. Gamma cameras and dual-particle cameras are increasingly being used for source location. This study reviews and discusses the research advancements in the field of gamma-ray and neutron measurements using mobile radiation detection systems since the Fukushima nuclear accident. Four scenarios are considered: radiological and nuclear accidents and emergencies; illicit traffic of special nuclear materials and radioactive materials; nuclear, accelerator, targets, and irradiation facilities; and naturally occurring radioactive materials monitoring-related activities. The work presented in this paper aims to: compile and review information on the radiation detection systems, contextual sensors and platforms used for each scenario; assess their advantages and limitations, looking prospectively to new research and challenges in the field; and support the decision making of national radioprotection agencies and response teams in respect to adequate detection system for each scenario. For that, an extensive literature review was conducted.

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“…For gamma ray detection [153] in CH, scintillators are typically exploited for depth profiling studies, thanks to their higher efficiency and because energy resolution in these applications is not critical. Solid-state detectors are instead preferred for bulk analysis, where high-energy resolution is a plus.…”

Section: Gamma-ray Detectorsmentioning

confidence: 99%

Detectors and Cultural Heritage: The INFN-CHNet Experience

et al. 2021

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Detectors are a key feature of the contemporary scientific approach to cultural heritage (CH), both for diagnostics and conservation. INFN-CHNet is the network of the Italian National Institute of Nuclear Physics that develops and applies new instrumentation for the study of CH. This process results in both optimized traditional state-of-the-art and highly innovative detection setups for spectrometric techniques. Examples of the former are X-rays, gamma-rays, visible-light and particles spectrometers tailored for CH applications, with optimized performances, reliability, weight, transportability, cost, absorbed power, and complementarity with other techniques. Regarding the latter, examples are ARDESIA, the array of detectors at the DAΦNE-Light facility, the MAXRS detection setup at the Riken-RAL muon beamline and the imaging facilities at the LENA Laboratory. Paths for next-generation instruments have been suggested, as in the case of the X-ray Superconductive Detectors and X-ray Microcalorimeter Spectrometers, allowing astonishing improvement in energy resolution. Many issues in CH can now be addressed thanks to scientific techniques exploiting the existing detectors, while many others are still to be addressed and require the development of new approaches and detectors.

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Advances in gamma radiation detection systems for emergency radiation monitoring

Cited by 41 publications

References 83 publications

A High Seebeck Voltage Thermoelectric Module with P‐type and N‐type MAPbI₃ Perovskite Single Crystals

A High Seebeck Voltage Thermoelectric Module with P‐type and N‐type MAPbI₃ Perovskite Single Crystals

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

Detectors and Cultural Heritage: The INFN-CHNet Experience

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Advances in gamma radiation detection systems for emergency radiation monitoring

Cited by 41 publications

References 83 publications

A High Seebeck Voltage Thermoelectric Module with P‐type and N‐type MAPbI3 Perovskite Single Crystals

A High Seebeck Voltage Thermoelectric Module with P‐type and N‐type MAPbI3 Perovskite Single Crystals

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

Detectors and Cultural Heritage: The INFN-CHNet Experience

Contact Info

Product

Resources

About

A High Seebeck Voltage Thermoelectric Module with P‐type and N‐type MAPbI₃ Perovskite Single Crystals

A High Seebeck Voltage Thermoelectric Module with P‐type and N‐type MAPbI₃ Perovskite Single Crystals