IEC 62372:2021
(Main)Nuclear instrumentation - Housed scintillators - Test methods of light output and intrinsic resolution
Nuclear instrumentation - Housed scintillators - Test methods of light output and intrinsic resolution
IEC 62372:2021 is applicable to housed scintillators for registration and spectrometry of alpha-, beta-, gamma-, X-ray and neutron radiation. This document specifies the requirements for the testing equipment and test methods of the basic parameters, of housed scintillators, such as:
- the direct method is applicable to measure the light output of housed scintillators based on scintillation material. The housed scintillators certified by this method can be used as working standard of housed scintillators (hereinafter: working standard) when performing measurements by a relative method of comparison.
- the relative method of comparison with the working standard is applicable to housed scintillators based on the same scintillation material as the working standard.
This second edition cancels and replaces the first edition published in 2006. This edition includes the following significant technical changes with respect to the previous edition:
- Title has been modified.
- To review the existing requirements and to update the terminology, definitions and normative references.
Instrumentation nucléaire - Scintillateurs montés - Méthodes d'essai de lumière sortante et de résolution intrinsèque
IEC 62372:2021 s'applique aux scintillateurs montés utilisés pour l'enregistrement et la spectrométrie des radiations ionisantes (alpha, bêta, gamma, X et neutrons. Le présent document spécifie les exigences pour l'équipement d'essai et les méthodes d'essai des paramètres de base des scintillateurs montés, par exemple:
- la méthode directe est destinée à mesurer la lumière sortante de scintillateurs montés à partir d'un matériau de scintillation donné. Les scintillateurs montés certifiés avec cette méthode peuvent servir d'étalon de travail pour les scintillateurs montés (ci-après: étalon de travail) quand la méthode de comparaison est utilisée;
- la méthode de comparaison à l'étalon de travail est adaptée pour les scintillateurs montés qui présentent le même matériau de scintillation que l'étalon de travail.
Cette deuxième édition annule et remplace la première édition parue en 2006. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- le titre a été modifié;
- les exigences existantes ont été révisées et la terminologie, les définitions et les références normatives ont été mises à jour.
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IEC 62372 ®
Edition 2.0 2021-02
INTERNATIONAL
STANDARD
Nuclear instrumentation – Housed scintillators – Test methods of light output
and intrinsic resolution
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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About the IEC
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International Standards for all electrical, electronic and related technologies.
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IEC 62372 ®
Edition 2.0 2021-02
INTERNATIONAL
STANDARD
Nuclear instrumentation – Housed scintillators – Test methods of light output
and intrinsic resolution
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.120.01 ISBN 978-2-8322-9322-5
– 2 – IEC 62372:2021 © IEC 2021
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms, definitions, symbols and abbreviated terms . 5
3.1 Terms and definitions . 5
3.2 Symbols and abbreviated terms . 7
4 Test methods of basic parameters of housed scintillators . 9
4.1 General . 9
4.1.1 Test conditions . 9
4.1.2 The sources of ionizing radiation . 9
4.1.3 The assembly test conditions . 10
4.2 Test methods of nonlinearity and instability of the assembly . 10
4.2.1 Nonlinearity measurement . 10
4.2.2 Instability measurement . 12
4.3 Test methods of the intrinsic resolution, light output of the housed scintillator
and PMT spectrometric constant . 13
4.3.1 Equipment . 13
4.3.2 Measurements . 13
4.3.3 Processing of results . 14
4.4 Test methods of the light output . 15
4.4.1 General . 15
4.4.2 Measurements . 15
4.4.3 Processing of results . 16
4.5 Test methods of the intrinsic resolution . 16
4.5.1 Determination of PMT spectrometric constant . 16
4.5.2 Test method of the intrinsic resolution for housed scintillator . 17
Bibliography . 19
Table 1 – Source of ionizing radiation . 9
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
NUCLEAR INSTRUMENTATION – HOUSED SCINTILLATORS –
TEST METHODS OF LIGHT OUTPUT AND INTRINSIC RESOLUTION
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62372 has been prepared by IEC technical committee 45: Nuclear
instrumentation.
This second edition cancels and replaces the first edition published in 2006. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
• Title has been modified.
• To review the existing requirements and to update the terminology, definitions and
normative references.
– 4 – IEC 62372:2021 © IEC 2021
The text of this International Standard is based on the following documents:
FDIS Report on voting
45/913/FDIS 45/915/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
NUCLEAR INSTRUMENTATION – HOUSED SCINTILLATORS –
TEST METHODS OF LIGHT OUTPUT AND INTRINSIC RESOLUTION
1 Scope
This document is applicable to housed scintillators for registration and spectrometry of alpha-,
beta-, gamma-, X-ray and neutron radiation.
The main parameters, such as a light output and intrinsic resolution are established. This
document specifies the requirements for the testing equipment and test methods of the basic
parameters of housed scintillators, such as:
• the direct method is applicable to measure the light output of housed scintillators based on
scintillation material. The housed scintillators certified by this method can be used as
working standard of housed scintillators (hereinafter: working standard) when performing
measurements by a relative method of comparison.
• the relative method of comparison with the working standard is applicable to housed
scintillators based on the same scintillation material as the working standard.
This document does not apply to gas or liquid scintillators and scintillators for counting and
current modes.
The numerical values of the parameters are set to the specific type of scintillators in the
specifications.
2 Normative references
There are no normative references in this document.
3 Terms, definitions, symbols and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
scintillator
luminescent material, usually liquid or solid, showing radioluminescence with a short afterglow
[SOURCE: IEC 60050-845:1987, 845-04-37]
3.1.2
housed scintillator
scintillator, housed in a container with a reflector and optical window
– 6 – IEC 62372:2021 © IEC 2021
3.1.3
scintillation detector
radiation detector consisting of a scintillator that is usually optically coupled to a
photosensitive device, directly or through light guides
Note 1 to entry: The scintillator consists of a scintillating material in which the ionizing particle produces a burst
of luminescence radiation along its path. A common scintillator is NaI(Tl).
[SOURCE: IEC 60050-395:2014, 395-03-01]
3.1.4
assembly
light protective chamber containing a housed scintillator, photomultiplier (PMT), PMT voltage
divider
Note 1 to entry: Assembly is used for testing of the housed scintillator.
3.1.5
light yield
η
ratio of scintillation photons summed energy (E ) to energy (E) lost by ionizing particles in the
p
scintillator
E
p
η=
E
Note 1 to entry: Value of η depends on type and energy of ionizing particle.
3.1.6
light output
C
ratio of total energy (L ) of scintillation photons, which pass through the output window of the
ph
housed scintillator of ionizing radiation, to energy (E), lost by ionizing particles in the
scintillator
L
ph
C=
E
3.1.7
intrinsic resolution of housed scintillator of ionizing radiation
R
d
component, given by housed scintillator of ionizing radiation to energy resolution of the
scintillation detector
Note 1 to entry: The intrinsic resolution R is defined from the relation:
d
2 2
R = R − R ,
d a pm
where
R is the energy resolution of the scintillation detector;
a
R is PMT intrinsic resolution.
pm
3.1.8
total absorption
...
IEC 62372 ®
Edition 2.0 2021-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Nuclear instrumentation – Housed scintillators – Test methods of light output
and intrinsic resolution
Instrumentation nucléaire – Scintillateurs montés – Méthodes d'essai de lumière
sortante et de résolution intrinsèque
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
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and withdrawn publications.
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containing more than 22 300 terminological entries in English
details all new publications released. Available online and once
and French, with equivalent terms in 19 additional languages.
a month by email.
Also known as the International Electrotechnical Vocabulary
(IEV) online.
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IEC 62372 ®
Edition 2.0 2021-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Nuclear instrumentation – Housed scintillators – Test methods of light output
and intrinsic resolution
Instrumentation nucléaire – Scintillateurs montés – Méthodes d'essai de lumière
sortante et de résolution intrinsèque
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.120.01 ISBN 978-2-8322-7267-1
– 2 – IEC 62372:2021 © IEC 2021
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms, definitions, symbols and abbreviated terms . 5
3.1 Terms and definitions . 5
3.2 Symbols and abbreviated terms . 7
4 Test methods of basic parameters of housed scintillators . 9
4.1 General . 9
4.1.1 Test conditions . 9
4.1.2 The sources of ionizing radiation . 9
4.1.3 The assembly test conditions . 10
4.2 Test methods of nonlinearity and instability of the assembly . 10
4.2.1 Nonlinearity measurement . 10
4.2.2 Instability measurement . 12
4.3 Test methods of the intrinsic resolution, light output of the housed scintillator
and PMT spectrometric constant . 13
4.3.1 Equipment . 13
4.3.2 Measurements . 13
4.3.3 Processing of results . 14
4.4 Test methods of the light output . 15
4.4.1 General . 15
4.4.2 Measurements . 15
4.4.3 Processing of results . 16
4.5 Test methods of the intrinsic resolution . 16
4.5.1 Determination of PMT spectrometric constant . 16
4.5.2 Test method of the intrinsic resolution for housed scintillator . 17
Bibliography . 19
Table 1 – Source of ionizing radiation . 9
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
NUCLEAR INSTRUMENTATION – HOUSED SCINTILLATORS –
TEST METHODS OF LIGHT OUTPUT AND INTRINSIC RESOLUTION
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62372 has been prepared by IEC technical committee 45: Nuclear
instrumentation.
This second edition cancels and replaces the first edition published in 2006. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
• Title has been modified.
• To review the existing requirements and to update the terminology, definitions and
normative references.
– 4 – IEC 62372:2021 © IEC 2021
The text of this International Standard is based on the following documents:
FDIS Report on voting
45/913/FDIS 45/915/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
NUCLEAR INSTRUMENTATION – HOUSED SCINTILLATORS –
TEST METHODS OF LIGHT OUTPUT AND INTRINSIC RESOLUTION
1 Scope
This document is applicable to housed scintillators for registration and spectrometry of alpha-,
beta-, gamma-, X-ray and neutron radiation.
The main parameters, such as a light output and intrinsic resolution are established. This
document specifies the requirements for the testing equipment and test methods of the basic
parameters of housed scintillators, such as:
• the direct method is applicable to measure the light output of housed scintillators based on
scintillation material. The housed scintillators certified by this method can be used as
working standard of housed scintillat
...
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