GB/T 39820-2021Cerium bromide scintillator (English PDF)
溴化铈闪烁体
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
March 9, 2021
Implementation date
October 1, 2021
Scope
GB/T 39820-2021 is the English-translated version of 溴化铈闪烁体.
GB/T 39820-2021 is the Chinese national standard for cerium bromide scintillators.
It gives the terms and definitions, the technical requirements - the dimensions, the transparency, the light yield, the energy resolution and the decay time - the test methods, the inspection rules, the provisions on marks, packaging, transport and storage and the accompanying documents.
It applies to the cerium bromide crystals used to measure nuclear radiation. Crystal growers and the makers of radiation detectors use it. Issued on 9 March 2021, it has applied since 1 October 2021.
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Document preview — GB/T 39820-2021
National Standard of the People's Republic of China
- ICS
- 07.030
- Classification
- Q 65
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Technical requirements
- 4.1 Appearance and structure
- 4.2 Flicker performance
- 4.3 Environmental adaptability
- 5 Test method
- 5.1 Appearance and structure inspection
- 5.2 Flicker performance measurement
- 5.3 Environmental test
- 6 Inspection rules
- 6.1 Inspection classification
- 6.2 Type inspection
- 6.3 Factory inspection
- 7 Marks, packaging, transportation, storage and accompanying documents
- 7.1 Mark
- 7.2 Packaging
- 7.3 Transportation
- 7.4 Storage
- 7.5 Accompanying documents
- Appendix A (Normative Appendix) Background counting rate test method
- Appendix B (Normative Appendix) Time Resolution Test Method
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
1 Scope
This standard specifies the terms and definitions, technical requirements, test methods, inspection rules, signs, packaging, transportation, and storage of cerium bromide scintillators And accompanying documents.
This standard applies to cerium bromide scintillators for measuring nuclear radiation.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document. For undated reference documents, the latest version (including all amendments) is applicable to this document.
GB/T 10263-2006 Environmental conditions and test methods for nuclear radiation detectors
GB/T 13181-2002 Scintillator performance measurement method
GB/T 28544-2012 Packaged scintillator light output and inherent resolution measurement method
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 Cerium bromide scintillation crystal cerium bromidescintilation crystal
Under the action of ionizing radiation, a single crystal of cerium bromide that emits light radiation in a scintillation mode has a chemical formula of CeBr3.
3.2 Cerium bromide scintillator cerium
A component sensitive to ionizing radiation obtained by cerium bromide scintillation crystal through moisture-proof packaging.
3.3 Opticalwindow
The part of the cerium bromide scintillator that allows the scintillation light to pass through.
3.4 Entrancewindow
The incident surface of the cerium bromide scintillator that receives nuclear radiation.
3.5 Reflective layer
In order to improve the light collection efficiency of the cerium bromide scintillator, the reflective material is wrapped around the cerium bromide scintillator crystal.
3.6 Opticalycouplingmaterial
In order to efficiently transmit the light emitted by the cerium bromide scintillation crystal out of the optical window, the light transmission is added between the cerium bromide scintillation crystal and the optical window substance.
3.7 Delamination
Interlayer separation caused by the destruction of adhesives, adherends, or their interfaces.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 22 pages — is available in the English PDF.
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Related Standards
GB/T 10263-2006 — Environmental conditions and test procedures for nuclear radiation detectors
GB/T 28544-2012 — Measurement methods of light output and intrinsic resolution for housed scintillators
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