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Investigation of three-dimensional localisation of radioactive sources using a fast organic liquid scintillator detector

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Investigation of three-dimensional localisation of radioactive sources using a fast organic liquid scintillator detector. / Gamage, Kelum; Joyce, Malcolm; Taylor, Graeme.

In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 707, 2013, p. 123-126.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Gamage, K, Joyce, M & Taylor, G 2013, 'Investigation of three-dimensional localisation of radioactive sources using a fast organic liquid scintillator detector', Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 707, pp. 123-126. https://doi.org/10.1016/j.nima.2012.12.119

APA

Gamage, K., Joyce, M., & Taylor, G. (2013). Investigation of three-dimensional localisation of radioactive sources using a fast organic liquid scintillator detector. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 707, 123-126. https://doi.org/10.1016/j.nima.2012.12.119

Vancouver

Gamage K, Joyce M, Taylor G. Investigation of three-dimensional localisation of radioactive sources using a fast organic liquid scintillator detector. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2013;707:123-126. https://doi.org/10.1016/j.nima.2012.12.119

Author

Gamage, Kelum ; Joyce, Malcolm ; Taylor, Graeme. / Investigation of three-dimensional localisation of radioactive sources using a fast organic liquid scintillator detector. In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2013 ; Vol. 707. pp. 123-126.

Bibtex

@article{a83dfe5c348644e1b92680ca0a704fdf,
title = "Investigation of three-dimensional localisation of radioactive sources using a fast organic liquid scintillator detector",
abstract = "In this paper we discuss the possibility of locating radioactive sources in space using a scanning-based method, relative to the three-dimensional location of the detector. The scanning system comprises an organic liquid scintillator detector, a tungsten collimator and an adjustable equatorial mount. The detector output is connected to a bespoke fast digitiser (Hybrid Instruments Ltd., UK) which streams digital samples to a personal computer. A radioactive source has been attached to a vertical wall and the data have been collected in two stages. In the first case, the scanning system was placed a couple of metres away from the wall and in the second case it moved few centimetres from the previous location, parallel to the wall. In each case data were collected from a grid of measurement points (set of azimuth angles for set of elevation angles) which covered the source on the wall. The discrimination of fast neutrons and gamma rays, detected by the organic liquid scintillator detector, is carried out on the basis of pulse gradient analysis. Images are then produced in terms of the angular distribution of events for total counts, gamma rays and neutrons for both cases. The three-dimensional location of the neutron source can be obtained by considering the relative separation of the centres of the corresponding images of angular distribution of events. The measurements have been made at the National Physical Laboratory, Teddington, Middlesex, UK.",
author = "Kelum Gamage and Malcolm Joyce and Graeme Taylor",
year = "2013",
doi = "10.1016/j.nima.2012.12.119",
language = "English",
volume = "707",
pages = "123--126",
journal = "Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",
issn = "0168-9002",
publisher = "ELSEVIER SCIENCE BV",

}

RIS

TY - JOUR

T1 - Investigation of three-dimensional localisation of radioactive sources using a fast organic liquid scintillator detector

AU - Gamage, Kelum

AU - Joyce, Malcolm

AU - Taylor, Graeme

PY - 2013

Y1 - 2013

N2 - In this paper we discuss the possibility of locating radioactive sources in space using a scanning-based method, relative to the three-dimensional location of the detector. The scanning system comprises an organic liquid scintillator detector, a tungsten collimator and an adjustable equatorial mount. The detector output is connected to a bespoke fast digitiser (Hybrid Instruments Ltd., UK) which streams digital samples to a personal computer. A radioactive source has been attached to a vertical wall and the data have been collected in two stages. In the first case, the scanning system was placed a couple of metres away from the wall and in the second case it moved few centimetres from the previous location, parallel to the wall. In each case data were collected from a grid of measurement points (set of azimuth angles for set of elevation angles) which covered the source on the wall. The discrimination of fast neutrons and gamma rays, detected by the organic liquid scintillator detector, is carried out on the basis of pulse gradient analysis. Images are then produced in terms of the angular distribution of events for total counts, gamma rays and neutrons for both cases. The three-dimensional location of the neutron source can be obtained by considering the relative separation of the centres of the corresponding images of angular distribution of events. The measurements have been made at the National Physical Laboratory, Teddington, Middlesex, UK.

AB - In this paper we discuss the possibility of locating radioactive sources in space using a scanning-based method, relative to the three-dimensional location of the detector. The scanning system comprises an organic liquid scintillator detector, a tungsten collimator and an adjustable equatorial mount. The detector output is connected to a bespoke fast digitiser (Hybrid Instruments Ltd., UK) which streams digital samples to a personal computer. A radioactive source has been attached to a vertical wall and the data have been collected in two stages. In the first case, the scanning system was placed a couple of metres away from the wall and in the second case it moved few centimetres from the previous location, parallel to the wall. In each case data were collected from a grid of measurement points (set of azimuth angles for set of elevation angles) which covered the source on the wall. The discrimination of fast neutrons and gamma rays, detected by the organic liquid scintillator detector, is carried out on the basis of pulse gradient analysis. Images are then produced in terms of the angular distribution of events for total counts, gamma rays and neutrons for both cases. The three-dimensional location of the neutron source can be obtained by considering the relative separation of the centres of the corresponding images of angular distribution of events. The measurements have been made at the National Physical Laboratory, Teddington, Middlesex, UK.

U2 - 10.1016/j.nima.2012.12.119

DO - 10.1016/j.nima.2012.12.119

M3 - Journal article

VL - 707

SP - 123

EP - 126

JO - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

SN - 0168-9002

ER -