A fibre optic based approach and device for sensing alpha particles in liquids

Whittaker, Carly; Kalnins, Christopher A. G.; Ebendorff-Heidepreim, Heike; Ottaway, D. J.; Spooner, Nigel A.

doi:10.1016/j.sna.2019.111573

Cited by 5 publications

(4 citation statements)

References 9 publications

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“…In this study, we introduced a method for the energy calibration of spectra measured from gamma-ray sources using the PSOF detector, significantly expanding the applicability of PSOF detectors to include gamma nuclide identification. Additionally, the energy calibration method developed in this research allows for the conversion of pulse-height spectra from alpha, beta, and neutron radiation measured with PSOF detectors in prior studies into energy spectra [6,7,26].…”

Section: Discussionmentioning

confidence: 99%

“…Additionally, in February 2020, the Tokyo Electric Power Company (TEPCO) implemented a PSOF detector in the FDNPP drainage system to monitor 90 Sr, commencing operations [5]. The PSOF detector can be used to monitor daughter nuclides of 238 U for process control in mining operations and to assess tritium levels for onsite monitoring in rivers adjacent to nuclear facilities [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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Acquiring Gamma-Ray Energy Spectrum Using a Plastic Scintillation Optical Fiber Detector

Song,

Park,

Kim

et al. 2024

Photonics

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The plastic scintillation optical fiber (PSOF) detector, characterized by its large contact area with measurement targets, effectively detects and quantifies radiation in diverse radiation-contaminated areas and liquid environments. While it is extensively utilized for measuring alpha, beta, gamma, and neutron radiations, comprehensive documentation on the spectrum measurement and energy calibration methods for gamma nuclides has not been reported. Accurate energy calibration is crucial for the precise quantification of radiation doses from various sources. The pulse-height spectrum produced by the PSOF detector does not display a Compton maximum because of the significant Gaussian energy broadening. Additionally, this spectrum compresses as the distance increases between the radiation source and the light measurement device. In this study, the energy spectrum of a PSOF for gamma nuclides was characterized by energy calibrations using Compton edge (CE). The CE channel in the measurement spectrum of the PSOF detector for three gamma nuclides was identified using the first-order differentiation method. This technique was successfully applied to spectra measured at various radiation source positions to determine the attenuation coefficients. The proposed energy calibration method allows for the conversion of pulse-height spectra obtained from alpha, beta, and neutron radiation measured with PSOF detectors into energy spectra.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Acquiring Gamma-Ray Energy Spectrum Using a Plastic Scintillation Optical Fiber Detector

Song,

Park,

Kim

et al. 2024

Photonics

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“…Toward alpha particle detection in liquids for the application of radioisotope monitoring, Whittaker and co‐workers evaluated a range of commercially available and in‐house fabricated fiber‐derived structured scintillators. [ 139 ] BCF‐20 structured scintillators were further selected and incorporated into sensor device, enabling alpha particle detection at solution activity as low as 0.42 Bq mL ‐1 . For application of high dose rate brachytherapy, Rosales and co‐workers demonstrated a multipoint in vivo dosimeter based on BCF‐10, BCF‐12, and BCF‐60 fiber‐derived structured scintillators.…”

Section: Fiber‐derived Structured Scintillatorsmentioning

confidence: 99%

Structured Scintillators for Efficient Radiation Detection

Lin

Yang

et al. 2021

Advanced Science

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Scintillators, which can convert high‐energy ionizing radiation into visible light, have been serving as the core component in radiation detectors for more than a century of history. To address the increasing application demands along with the concern on nuclear security, various strategies have been proposed to develop a next‐generation scintillator with a high performance in past decades, among which the novel approach via structure control has received great interest recently due to its high feasibility and efficiency. Herein, the concept of “structure engineering” is proposed for the exploration of this type of scintillators. Via internal or external structure design with size ranging from micro size to macro size, this promising strategy cannot only improve scintillator performance, typically radiation stopping power and light yield, but also extend its functionality for specific applications such as radiation imaging and therapy, opening up a new range of material candidates. The research and development of various types of structured scintillators are reviewed. The current state‐of‐the‐art progresses on structure design, fabrication techniques, and the corresponding applications are discussed. Furthermore, an outlook focusing on the current challenges and future development is proposed.

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“…Plastic fibres with larger diameters, typically 1–3 mm, are often used due to higher NAs, and they are not as fragile as silica optical fibres [ 18 , 19 ]. A common feature of these dosimeters is the adaptation of the diameter of the scintillation material to the diameter of the optical fibre [ 20 , 21 ], the deposition of scintillation material on the surface or inside the optical fibre [ 22 ], or the direct doping of the optical fibre with scintillation material [ 23 , 24 ]. Silica optical fibres, despite their advantages, are significantly less used in dosimeters, mainly due to their small diameters [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

Design and Characterisation of an Optical Fibre Dosimeter Based on Silica Optical Fibre and Scintillation Crystal

Jelínek

Lazar

Mikel

2022

Sensors

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In nuclear power plants, particle accelerators, and other nuclear facilities, measuring the level of ionising gamma radiation is critical for the safety and management of the operation and the environment’s protection. However, in many cases, it is impossible to monitor ionising radiation directly at the required location continuously. This is typically either due to the lack of space to accommodate the entire dosimeter or in environments with high ionising radiation activity, electromagnetic radiation, and temperature, which significantly shorten electronics’ lifetime. To allow for radiation measurement in such scenarios, we designed a fibre optic dosimeter that introduces an optical fibre link to deliver the scintillation radiation between the ionising radiation sensor and the detectors. The sensors can thus be placed in space-constrained and electronically hostile locations. We used silica optical fibres that withstand high radiation doses, high temperatures, and electromagnetic interference. We use a single photon counter and a photomultiplier to detect the transmitted scintillation radiation. We have shown that selected optical fibres, combined with different scintillation materials, are suitable for measuring gamma radiation levels in hundreds of kBq. We present the architecture of the dosimeter and its experimental characterisation with several combinations of optical fibres, detectors, and scintillation crystals.

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A fibre optic based approach and device for sensing alpha particles in liquids

Cited by 5 publications

References 9 publications

Acquiring Gamma-Ray Energy Spectrum Using a Plastic Scintillation Optical Fiber Detector

Acquiring Gamma-Ray Energy Spectrum Using a Plastic Scintillation Optical Fiber Detector

Structured Scintillators for Efficient Radiation Detection

Design and Characterisation of an Optical Fibre Dosimeter Based on Silica Optical Fibre and Scintillation Crystal

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