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An Instrument for Measuring Ambient Dose Equivalent, H(10)

The design and calibration of a small and simple instrument for measuring the ambient dose equivalent, H*(10), in photon fields is described. Comprising a thermoluminescence LiF dosemeter inside a 20 mm diameter PMMA sphere, it is capable of measuring the ambient dose equivalent with a nearly isotro...

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Published in:Radiation protection dosimetry 1996-01, Vol.67 (1), p.33-39
Main Authors: Carlsson, C.A., Carlsson, G.A., Lund, E., Matscheko, G., Pettersson, H.B.L.
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Language:English
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container_issue 1
container_start_page 33
container_title Radiation protection dosimetry
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creator Carlsson, C.A.
Carlsson, G.A.
Lund, E.
Matscheko, G.
Pettersson, H.B.L.
description The design and calibration of a small and simple instrument for measuring the ambient dose equivalent, H*(10), in photon fields is described. Comprising a thermoluminescence LiF dosemeter inside a 20 mm diameter PMMA sphere, it is capable of measuring the ambient dose equivalent with a nearly isotropic response. In the interval 0.1-100 mSv and for the energy range 30 keV to 1.25 MeV the energy response is within -31% and +15% relative to that of 137Cs gamma radiation (662 keV). In practical use, it is therefore sufficient to calibrate the instrument in a 137Cs gamma field using the corresponding conversion coefficient H*(10)/Kair taken from tabulations. The possibility of using the instrument to monitor the ambient dose equivalent for energies above 1.25 MeV is discussed and indicates that the range of applicability can be extended to 4.4 MeV with an energy response within -10% relative to 662 keV.
doi_str_mv 10.1093/oxfordjournals.rpd.a031794
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language eng
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subjects Applied radiobiology (equipment, dosimetry...)
Biological and medical sciences
Biological effects of radiation
Fundamental and applied biological sciences. Psychology
MEDICIN
MEDICINE
Tissues, organs and organisms biophysics
title An Instrument for Measuring Ambient Dose Equivalent, H(10)
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