Performance of 10B+ZnS(Ag) neutron detectors in RPM for the detection of special nuclear materials

Guzmán-García, Karen Arlete; Vega-Carrillo, Héctor René; Gallego, Eduardo; González, Juan Antonio; Villafañe, Roberto; Lorente, Alfredo; Ibáñez-Fernández, Sviatoslav

doi:10.1016/j.radmeas.2017.11.001

Cited by 8 publications

(4 citation statements)

References 10 publications

(22 reference statements)

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“…252 Cf to 200 cm and 220 cm Measured and calculated count rates were corrected by the detector efficiencies that were previously determined [7,16]. For both conditions, the measured results are in good agreement with the MCNPX calculations.…”

Section: Detection Capability In Cps/ngsupporting

confidence: 55%

¹⁰B+ZnS(Ag) as an alternative to ³He-based detectors for Radiation Portal Monitors

et al. 2017

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Abstract. Typical radiation portal monitor systems, RPM, deployed to detect illicit trafficking of radioactive materials include a set of gamma-ray detectors and neutron detectors. Measurements and models were made, and both detectors were compared. The importance of the distance with respect to the ground was studied. The response with a 252 Cf moderated neutron source (0.5 cm lead and 2.5 cm polyethylene) was calculated in order to compare with other studied alternatives in the USA by Pacific National Northwest Laboratory, PNNL. With these results we conclude that neutron detectors using 10 B+ZnS(Ag) are an interesting alternative for replacing 3 He detectors. From the analysis with MCNPX we propose an improvement in the detector design.

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Section: Detection Capability In Cps/ngsupporting

confidence: 55%

¹⁰B+ZnS(Ag) as an alternative to ³He-based detectors for Radiation Portal Monitors

et al. 2017

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“…Among all the possible parameters, the nuclear instrumentation used to perform the measurements of the radioactive levels is a key aspect to be considered; a review of the main nuclear instruments that can be used for radioactive detection and identification can be found at [18]. The review describes the detection technologies which are commonly used in several application fields, like in nondestructive or passive methods and medical imaging [1,2,8,9], and in the detection and identification systems for emergencies [7,15,19,35,37] moreover, instruments have been classified based on the different kinds of detectable ionizing radiation of interest, like neutrons [6,21,22,24,31,39], charged particles and X or gamma photons [4,26,33,36].…”

Section: Introductionmentioning

confidence: 99%

Lesson learned from the recovery of an orphan source inside a maritime cargo: analysis of the nuclear instrumentations used, and measures realized during the operations

et al. 2020

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In this paper, the authors analyze the case study of the recovery of an orphan source of 60 Co inside a maritime cargo full of metal wastes in the Italian Harbor of Genova carried out by the Italian Fire Fighters. Orphan radioactive sources or Radiological Dispersal Devices are a critical security issue in large geographical areas, and they result in a safety concern for people who may become accidentally exposed to ionizing radiation. The abandonment of orphan sources can usually be related to three factors: human errors, cost reasons (in order to avoid the payment of disposal procedures), or malevolent purposes (like the production of dirty bombs). The present data concern the nuclear safety measures implemented during the recovery event and the pool of procedures carried out in order to reduce the risks for the involved harbor operators. Following data collection and analysis, an important lesson about the management of such events and scenarios can be learned.

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“…In problems related with nuclear safety such as: the control and prevention of illicit traffic of Special Nuclear Materials, the characterization of transuranic waste, in safeguards, and in the decontamination and dismantling of nuclear facilities, it is important to measure neutrons. Ports, customs and access points in several countries use gantry detectors with 3 He proportional detectors; however, its scarcity worldwide has led to the need to search for new detection options [12,13]. Guzmán-García et al, characterized the performance of scintillators of ZnS (Ag) and 10 B and determined their response to neutrons produced by sources of 241 AmBe and 252 Cf [14].…”

Section: Introductionmentioning

confidence: 99%

The Three-Body Structure of 2n and 2p Halo Nuclei

Sreeja

Balasubramaniam

2018

JNP

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UltimaGold TM AB and OptiphaseTrisafe are two liquid scintillators made by Perkin Elmer and EG & G Company respectively. Both are commercially promoted as scintillation detectors for α and β particles. In this work, the responses to γ-rays and neutrons of UltimaGold TM AB and OptiphaseTriSafe liquid scintillators, without and with reflector, have been measured aiming to use these scintillators as γ-rays and neutron detectors. Responses to γ-rays and neutrons were measured as pulse shape spectra in a multichannel analyzer. Scintillators were exposed to gamma rays produced by 137 Cs, 54 Mn, 22 Na and 60 Co sources. The response to neutrons was obtained with a 241 AmBe neutron source that was measured to 25 and 50 cm from the scintillators. The pulse height spectra due to gamma rays are shifted to larger channels as the photon energy increases and these responses are different from the response due to neutrons. Thus, UltimaGold TM AB and OptiphaseTrisafe can be used to detect γ-rays and neutrons.

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Performance of 10B+ZnS(Ag) neutron detectors in RPM for the detection of special nuclear materials

Cited by 8 publications

References 10 publications

¹⁰B+ZnS(Ag) as an alternative to ³He-based detectors for Radiation Portal Monitors

¹⁰B+ZnS(Ag) as an alternative to ³He-based detectors for Radiation Portal Monitors

Lesson learned from the recovery of an orphan source inside a maritime cargo: analysis of the nuclear instrumentations used, and measures realized during the operations

The Three-Body Structure of 2n and 2p Halo Nuclei

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Performance of 10B+ZnS(Ag) neutron detectors in RPM for the detection of special nuclear materials

Cited by 8 publications

References 10 publications

10B+ZnS(Ag) as an alternative to 3He-based detectors for Radiation Portal Monitors

10B+ZnS(Ag) as an alternative to 3He-based detectors for Radiation Portal Monitors

Lesson learned from the recovery of an orphan source inside a maritime cargo: analysis of the nuclear instrumentations used, and measures realized during the operations

The Three-Body Structure of 2n and 2p Halo Nuclei

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Product

Resources

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¹⁰B+ZnS(Ag) as an alternative to ³He-based detectors for Radiation Portal Monitors

¹⁰B+ZnS(Ag) as an alternative to ³He-based detectors for Radiation Portal Monitors