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Calibration Specification of γ Ray Spectrometers of Scintillation Detectors
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JJF 1744-2019
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Basic data Standard ID | JJF 1744-2019 (JJF1744-2019) | Description (Translated English) | Calibration Specification of �� Ray Spectrometers of Scintillation Detectors | Sector / Industry | Metrology & Measurement Industry Standard | Classification of Chinese Standard | A58 | Classification of International Standard | 17.240 | Word Count Estimation | 15,195 | Date of Issue | 2019 | Date of Implementation | 2019-12-27 | Issuing agency(ies) | State Administration for Market Regulation |
JJF 1744-2019: Calibration Specification of γ Ray Spectrometers of Scintillation Detectors---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Calibration specification for scintillator detector gamma spectrometer)
National Measurement Technical Specification of the People's Republic of China
Calibration specification for scintillator detector gamma spectrometer
2019-09-27 release
2019-12-27 Implementation
Issued by the State Administration of Market Supervision and Administration
Calibration specification for scintillator detector gamma spectrometer
Centralized unit. National Technical Committee on Ionizing Radiation Measurement
Drafting unit. Shanghai Institute of Metrology and Testing Technology
Chinese Academy of Metrology
This specification entrusts the National Ionizing Radiation Measurement Technical Committee to interpret
The main drafters of this specification.
He Linfeng (Shanghai Institute of Metrology and Testing Technology)
Tang Fangdong (Shanghai Institute of Metrology and Testing Technology)
Liang Juncheng (Chinese Academy of Metrology)
Participating drafters.
Lu Xiaojun (Shanghai Institute of Metrology and Testing Technology)
Liu Haoran (Chinese Academy of Metrology)
table of Contents
Introduction (Ⅱ)
1 Scope (1)
2 References (1)
3 Terms and units of measurement (1)
3.1 Terminology (1)
3.2 Unit of measurement (1)
4 Overview (1)
5 Metrological characteristics (2)
5.1 Energy resolution (2)
5.2 Background (2)
5.3 Activity response/indication error (2)
6 Calibration conditions (2)
6.1 Environmental conditions (2)
6.2 Measurement standards (2)
7 Calibration items and calibration methods (2)
7.1 Background (2)
7.2 Energy resolution (3)
7.3 Activity response/display error (3)
8 Expression of calibration results (4)
9 Recalibration time interval (4)
Appendix A Recommended Format of Calibration Record (5)
Appendix B. Internal content of calibration certificate (6)
Appendix C Examples of Uncertainty Evaluation of Activity Response Calibration (7)
Introduction
This specification is prepared in accordance with JJF 1071-2010 "Rules for Compiling National Measurement and Calibration Specifications".
The preparation of this specification mainly refers to JJF 1001-2011 "General Measurement Terms and Definitions", GB/T 4960.6-
2008 "Nuclear Science and Technology Terms Part 6. Nuclear Instruments", IEC 61453..2007 "Nuclear Instruments Radioactivity
Calibration and routine testing of scintillator gamma detector system for radionuclide analysis (Nuclearinstrumentation-Scintil-
lationgammaraydetectorsystemsfortheassayofradionuclides-Calibrationand
routinetests) and other standards and specifications.
This specification is the first release.
Calibration specification for scintillator detector gamma spectrometer
1 Scope
This specification applies to the calibration of scintillator detector gamma spectrometers with an energy measurement range of (59 ~ 3000) keV,
Scintillator detectors include sodium iodide detector, bismuth germanate detector, lanthanum bromide detector, etc.
2 Reference documents
This specification refers to the following documents.
JJF 1001-2011 General Measurement Terms and Definitions
GB/T 4960.6-2008 Nuclear science and technology terminology Part 6. Nuclear instrumentation
IEC 61453..2007 Calibration and routine of scintillator gamma detector system for nuclear instrument radionuclide analysis
Test (Nuclearinstrumentation-Scintilationgammaraydetectorsystemsfortheassay
ofradionuclides-Calibrationandroutinetests)
For dated reference documents, only the dated version applies to this specification; for those without date references
The latest version (including all amendments) is applicable to this specification.
3 Terms and units of measurement
3.1 Terminology
The terms and definitions defined in JJF 1001-2011, GB/T 4960.6-2008 and the following apply to this specification.
3.1.1 background
The reading of the instrument when there is no tested sample.
3.1.2 countrate
The count of the instrument per unit time.
3.1.3 Width of full width at full widthathalfmaximum
In the pulse height spectrum, the distance between the abscissas of two points at half of the peak of a single peak.
3.2 Unit of measurement
3.2.1 [Radioactivity] Activity. Becco [Leer]; Symbol. Bq.
3.2.2 [Radioactivity] Specific activity. Beco per kilogram; Symbol. Bq · kg-1.
4 Overview
The scintillator detector gamma spectrometer consists of a detector, a lead shielded room, a high-voltage power supply, a linear amplifier, a multi-channel analyzer,
Spectral analysis and processing software, operation control and display system, etc., the detector material usually uses NaI (Tl),
BGO, LaBr3, etc. The electrical pulse signal generated by the interaction between γ-ray and detector is analyzed and recorded by the electronic system
Record, form a gamma spectrum, and after energy and efficiency calibration, the radionuclide in the sample can be identified and determined by the gamma spectrum
Its activity.
The scintillator detector gamma spectrometer is mainly used in the construction of decorative materials, environmental and biological samples of gamma radionuclide
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