Neutron fluence and dose measurements by optical fibres

H. Henschel; O. Köhn; S. Metzger; M. Decréton; P. Devos; O. Deparis; Johannes Kirchhof; Stephan J. Grimm

doi:10.1117/12.267918

Neutron fluence and dose measurements by optical fibres

H. Henschel, O. Köhn, S. Metzger, M. Decréton, P. Devos, O. Deparis, Johannes Kirchhof, Stephan J. Grimm

Research output › peer-review

Abstract

It is shown that fibres doped with (Ge+P) or with (Ge+B) can be used with good accuracy for fluence determinations of fast or slow neutrons, respectively, when they are calibrated at sources of known flux. Calibration at easily available gamma sources, as well as fast neutron dose determination, are complicated by the facts that energetic recoil protons generated by fast neutrons in H-containing fibre coatings contribute to the dose in the fibre core, and that the highly ionizing secondary particles released by fast and slow neutrons will cause significantly lower light absorption than beta or gamma rays of the same dose.

Original language	English
Pages (from-to)	290-295
Number of pages	6
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	2867
DOIs	https://doi.org/10.1117/12.267918
State	Published - 27 Feb 1996
Event	1996 - International Conference Neutrons in Research and Industry - Crete Duration: 9 Jun 1996 → 15 Jun 1996

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.267918

Cite this

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title = "Neutron fluence and dose measurements by optical fibres",

abstract = "It is shown that fibres doped with (Ge+P) or with (Ge+B) can be used with good accuracy for fluence determinations of fast or slow neutrons, respectively, when they are calibrated at sources of known flux. Calibration at easily available gamma sources, as well as fast neutron dose determination, are complicated by the facts that energetic recoil protons generated by fast neutrons in H-containing fibre coatings contribute to the dose in the fibre core, and that the highly ionizing secondary particles released by fast and slow neutrons will cause significantly lower light absorption than beta or gamma rays of the same dose.",

keywords = "Dose measurement, Fast neutrons, Fluence measurement, Light absorption, Optical fibres, Thermal neutrons, Thermoluminescence",

author = "H. Henschel and O. K{\"o}hn and S. Metzger and M. Decr{\'e}ton and P. Devos and O. Deparis and Johannes Kirchhof and Grimm, {Stephan J.}",

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TY - JOUR

T1 - Neutron fluence and dose measurements by optical fibres

AU - Henschel, H.

AU - Köhn, O.

AU - Metzger, S.

AU - Decréton, M.

AU - Devos, P.

AU - Deparis, O.

AU - Kirchhof, Johannes

AU - Grimm, Stephan J.

N1 - Publisher Copyright: © SPIE.

PY - 1996/2/27

Y1 - 1996/2/27

N2 - It is shown that fibres doped with (Ge+P) or with (Ge+B) can be used with good accuracy for fluence determinations of fast or slow neutrons, respectively, when they are calibrated at sources of known flux. Calibration at easily available gamma sources, as well as fast neutron dose determination, are complicated by the facts that energetic recoil protons generated by fast neutrons in H-containing fibre coatings contribute to the dose in the fibre core, and that the highly ionizing secondary particles released by fast and slow neutrons will cause significantly lower light absorption than beta or gamma rays of the same dose.

AB - It is shown that fibres doped with (Ge+P) or with (Ge+B) can be used with good accuracy for fluence determinations of fast or slow neutrons, respectively, when they are calibrated at sources of known flux. Calibration at easily available gamma sources, as well as fast neutron dose determination, are complicated by the facts that energetic recoil protons generated by fast neutrons in H-containing fibre coatings contribute to the dose in the fibre core, and that the highly ionizing secondary particles released by fast and slow neutrons will cause significantly lower light absorption than beta or gamma rays of the same dose.

KW - Dose measurement

KW - Fast neutrons

KW - Fluence measurement

KW - Light absorption

KW - Optical fibres

KW - Thermal neutrons

KW - Thermoluminescence

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JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - 1996 - International Conference Neutrons in Research and Industry

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