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Zubair HT, Bradley DA, Khairina MD, Oresegun A, Basaif A, Othman J, Rifiat R, Hamidi F, Rahman L, Ezzadeen A, Ibrahim SA, Mansor S, Alkhorayef M, Abdul-Rashid HA. An extendable optical fibre probe survey meter for naturally occurring radioactive material (NORM) and other weak emitters. Sci Rep 2023; 13:11918. [PMID: 37488183 PMCID: PMC10366106 DOI: 10.1038/s41598-023-39180-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 07/20/2023] [Indexed: 07/26/2023] Open
Abstract
We have developed a radioluminescence-based survey meter for use in industries in which there is involvement in naturally occurring radioactive material (NORM), also in support of those needing to detect other weak emitters of radiation. The functionality of the system confronts particular shortcomings of the handheld survey meters that are currently being made use of. The device couples a LYSO:Ce scintillator with a photodetector via a polymer optical fibre waveguide, allowing for "intrinsically safe" inspection within pipework, separators, valves and other such component pieces. The small-diameter optical fibre probe is electrically passive, immune to electromagnetic interference, and chemically inert. The readout circuit is entirely incorporated within a handheld casing housing a silicon photomultiplier (SiPM) detection circuit and a microprocessor circuit connected to an LCD display. A 15 m long flexible PMMA optical fibre waveguide is butt coupled to an ABS plastic probe that retains the LYSO:Ce scintillator. Initial tests have included the use of lab-based mixed gamma-ray sources, measurements being made in concert with a reference conventional GM survey-meter. Characterization, via NORM sources at a decontamination facility, has shown useful sensitivity, covering the dose-rate range 0.10- to 28 µSv h-1 (R-squared 0.966), extending to 80 µSv/h as demonstrated in use of a Cs-137 source. The system is shown to provide an effective tool for detection of radioactivity within hard to access locations, in particular for sources emitting at low radiation levels, down to values that approach background.
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Affiliation(s)
- H T Zubair
- Fibre Optics Research Centre, Faculty of Engineering, Multimedia University, Jalan Multimedia, 63100, Cyberjaya, Malaysia
- Lumisyns Sdn Bhd, 47600, Subang Jaya, Selangor, Malaysia
| | - D A Bradley
- Centre for Applied Physics and Radiation Technologies, Sunway University, 46150, Petaling Jaya, Malaysia
- School of Mathematics and Physics, University of Surrey, Guildford, GU2 7XH, UK
| | - M D Khairina
- Lumisyns Sdn Bhd, 47600, Subang Jaya, Selangor, Malaysia
| | - Adebiyi Oresegun
- Fibre Optics Research Centre, Faculty of Engineering, Multimedia University, Jalan Multimedia, 63100, Cyberjaya, Malaysia
| | - A Basaif
- Fibre Optics Research Centre, Faculty of Engineering, Multimedia University, Jalan Multimedia, 63100, Cyberjaya, Malaysia
| | - J Othman
- Alypz Sdn Bhd, Jalan Industri USJ 1/1, Taman Perindustrian USJ 1, 47600, Subang Jaya, Selangor, Malaysia
| | - R Rifiat
- Alypz Sdn Bhd, Jalan Industri USJ 1/1, Taman Perindustrian USJ 1, 47600, Subang Jaya, Selangor, Malaysia
| | - F Hamidi
- Alypz Sdn Bhd, Jalan Industri USJ 1/1, Taman Perindustrian USJ 1, 47600, Subang Jaya, Selangor, Malaysia
| | - L Rahman
- Alypz Sdn Bhd, Jalan Industri USJ 1/1, Taman Perindustrian USJ 1, 47600, Subang Jaya, Selangor, Malaysia
| | - A Ezzadeen
- Alypz Sdn Bhd, Jalan Industri USJ 1/1, Taman Perindustrian USJ 1, 47600, Subang Jaya, Selangor, Malaysia
| | - S A Ibrahim
- Fibre Optics Research Centre, Faculty of Engineering, Multimedia University, Jalan Multimedia, 63100, Cyberjaya, Malaysia
| | - S Mansor
- Fibre Optics Research Centre, Faculty of Engineering, Multimedia University, Jalan Multimedia, 63100, Cyberjaya, Malaysia
| | - M Alkhorayef
- Department of Radiological Sciences, College of Applied Medical Sciences, King Saud University, P.O Box 10219, 11433, Riyadh, Saudi Arabia
| | - H A Abdul-Rashid
- Fibre Optics Research Centre, Faculty of Engineering, Multimedia University, Jalan Multimedia, 63100, Cyberjaya, Malaysia.
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Bradley DA, Essa RZ, Peh SC, Teow SY, Chew MT, Zubair HT, Oresegun A, Basaif A, Choo KY, Ibrahim SA, Abdul-Rashid HA. Low dose and low dose rate radioluminescence dosimetry. Appl Radiat Isot 2023; 198:110875. [PMID: 37257265 DOI: 10.1016/j.apradiso.2023.110875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 04/04/2023] [Accepted: 05/24/2023] [Indexed: 06/02/2023]
Abstract
Review is provided of a number of low-dose, low dose rate situations that in study require advances in the development of dosimetric facilities. Using a clinical linac set up to provide doses down to the few mGy level, the performance of a real-time radioluminescence system has then been illustrated, accommodating pulsed as well as continuous dose delivery. The system gate times provide for tracking of the pattern of dose delivery, allowing detailed account of dose and dose-rate variations. The system has been tested in both x-ray and electron mode dose delivery.
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Affiliation(s)
- D A Bradley
- Centre for Applied Physics and Radiation Technologies, Sunway University, PJ, Malaysia; School of Mathematics and Physics, University of Surrey, Guildford, GU2 7XH, UK.
| | - R Z Essa
- Department of Medical Sciences, School of Medical and Life Sciences, Sunway University, PJ, Malaysia
| | - Suat-Cheng Peh
- Department of Medical Sciences, School of Medical and Life Sciences, Sunway University, PJ, Malaysia
| | - Sin-Yeang Teow
- Department of Medical Sciences, School of Medical and Life Sciences, Sunway University, PJ, Malaysia
| | - Ming-Tsuey Chew
- Centre for Applied Physics and Radiation Technologies, Sunway University, PJ, Malaysia
| | - H T Zubair
- Fiber Optics Research Centre, Multimedia University, Cyberjaya, 63100, Jalan Multimedia, Malaysia; Lumisyns Sdn Bhd, Cyberjaya, 63100, Selangor, Malaysia
| | - Adebiyi Oresegun
- Fiber Optics Research Centre, Multimedia University, Cyberjaya, 63100, Jalan Multimedia, Malaysia
| | - Azmi Basaif
- Fiber Optics Research Centre, Multimedia University, Cyberjaya, 63100, Jalan Multimedia, Malaysia
| | - Kan Yeep Choo
- Fiber Optics Research Centre, Multimedia University, Cyberjaya, 63100, Jalan Multimedia, Malaysia
| | - Siti A Ibrahim
- Fiber Optics Research Centre, Multimedia University, Cyberjaya, 63100, Jalan Multimedia, Malaysia
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Zubair H, Rifiat R, Oresegun A, Hamidi F, Othman J, Khairina M, Basaif A, Ibrahim S, Abdul-Rashid H, Bradley D. Fiber optic coupled survey meter for NORM and low-level radioactivity monitoring. Radiat Phys Chem Oxf Engl 1993 2021. [DOI: 10.1016/j.radphyschem.2021.109682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Oresegun A, Tarif ZH, Ghassan L, Zin H, Abdul-Rashid HA, Bradley DA. Radioluminescence of cylindrical and flat Ge-doped silica optical fibers for real-time dosimetry applications. Appl Radiat Isot 2021; 176:109812. [PMID: 34166948 DOI: 10.1016/j.apradiso.2021.109812] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 05/31/2021] [Accepted: 06/01/2021] [Indexed: 11/19/2022]
Abstract
Investigation has been made of the radioluminescence dose response of Ge-doped silica flat and cylindrical fibers subjected to 6 and 10 MV photon beams. The fibers have been custom fabricated, obtaining Ge dopant concentrations of 6 and 10 mol%, subsequently cut into 20 mm lengths. Each sample has been exposed under a set of similar conditions, with use made of a fixed field size and source to surface distance (SSD). Investigation of dosimetric performance has involved radioluminescence linearity, dose-rate dependence, energy dependence, and reproducibility. Mass for mass, the 6 mol% Ge-doped samples provided the greater radioluminescence yield, with both flat and cylindrical fibers responding linearly to the absorbed dose. Further found has been that the cylindrical fibers provided a yield some 38% greater than that of the flat fibers. At 6 MV, the cylindrical fibers were also found to exhibit repeatability variation of <1%, superior to that of the flat fibers, offering strong potential for use in real-time dosimetry applications.
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Affiliation(s)
- Adebiyi Oresegun
- Fibre Optics Research Centre, Faculty of Engineering, Multimedia University, Jalan Multimedia, 63100, Cyberjaya, Malaysia
| | - Zubair H Tarif
- Fibre Optics Research Centre, Faculty of Engineering, Multimedia University, Jalan Multimedia, 63100, Cyberjaya, Malaysia; Lumisysns Technology Sdn Bhd, Cyberjaya, 63100, Selangor, Malaysia
| | - Louay Ghassan
- Fibre Optics Research Centre, Faculty of Engineering, Multimedia University, Jalan Multimedia, 63100, Cyberjaya, Malaysia
| | - Hafiz Zin
- Advanced Medical and Dental Institute, Universiti Sains Malaysia (USM), Bertam, 13200, Kepala Batas Penang, Malaysia
| | - Hairul Azhar Abdul-Rashid
- Fibre Optics Research Centre, Faculty of Engineering, Multimedia University, Jalan Multimedia, 63100, Cyberjaya, Malaysia.
| | - D A Bradley
- Centre for Applied Physics and Radiation Technologies, Sunway University, 46150, PJ, Malaysia; Department of Physics, University of Surrey, Guildford, GU2 7XH, UK
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