JJG 417: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| JJG 417-2006 | English | 599 |
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Verification Regulation of γ Ray Spectrometers
| Obsolete |
JJG 417-2006
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| JJG 417-1986 | English | 399 |
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Verification Regulation of Calibration for Ge-γ-Ray Spectrometer by <152>Eu Point γ-Ray Standard Source
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JJG 417-1986
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PDF similar to JJG 417-2006
Basic data | Standard ID | JJG 417-2006 (JJG417-2006) | | Description (Translated English) | Verification Regulation of �� Ray Spectrometers | | Sector / Industry | Metrology & Measurement Industry Standard | | Classification of Chinese Standard | A58 | | Classification of International Standard | 17.240 | | Word Count Estimation | 15,125 | | Date of Issue | 2006-12-08 | | Date of Implementation | 2007-06-08 | | Older Standard (superseded by this standard) | JJG 417-1986 | | Quoted Standard | AQSIQ Announcement No. 187 of 2006 | | Regulation (derived from) | AQSIQ Announcement No. 187 of 2006 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine | | Summary | This standard applies to �� ??spectrometer initial verification, testing and use of follow-up inspection. �� �� spectrometer spectrometer including sodium iodide and semiconductor �� spectrometer. | JJG 417-2006: Verification Regulation of γ Ray Spectrometers---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.
Verification Regulation of γ Ray Spectrometers
National Metrology Verification Regulations of the People's Republic
Gamma spectrometer
Released on December 12,.2006
Implemented on.2007-06-08
The General Administration of Quality Supervision, Inspection and Quarantine issued
γ spectrometer verification procedure
γRaySp
Ectrometers
Replacing JJG 417-1986
This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine on December 8,.2006, and
It will take effect on June 8,.2007.
Focal Point. National Ionizing Radiation Measurement Technical Committee
Main drafting unit. China Institute of Metrology
Participated in the drafting unit. Radioactive Measurement Level Station of the Commission of Science, Technology and Industry for National Defense
This regulation entrusts the National Ionizing Radiation Measurement Technical Committee to explain
The main drafters of this procedure.
Li Yanlu (China Institute of Metrology)
Participate in the drafters.
Qi Lijun (Development Committee of Radioactive Measurement of National Defense Science and Technology Commission)
table of Contents
1 Scope (1)
2 Citations (1)
3 terms (1)
4 Overview (2)
5 Metrological performance requirements (2)
5.1 Sodium Iodide gamma spectrometer (2)
5.2 Semiconductor gamma spectrometer (2)
6 General technical requirements (2)
6.1 Equipment label clear (2)
6.2 Adaptability of operation (3)
6.3 Sodium iodide [NaI(Tl)] detector (3)
6.4 Shielding room (3)
6.5 multi-channel pulse amplitude analyzer (3)
6.6 sample box (3)
6.7 Radioactive source bracket (3)
6.8 Supervision source (3)
7 Measuring instrument control (3)
7.1 Sodium Iodide gamma spectrometer (3)
7.2 Semiconductor gamma spectrometer (5)
7.3 Processing of verification results (6)
7.4 Verification cycle (7)
Appendix A Example of Uncertainty Analysis of Semiconductor γ Spectrometer (8)
Appendix B Verification Certificate and Verification Result Notice (inside page) format (10)
γ spectrometer verification procedure
1 Scope
This procedure is applicable to the first verification, subsequent verification and in-use inspection of the gamma spectrometer. Gamma spectrometer includes sodium iodide gamma spectrum
Instrument and semiconductor gamma spectrometer.
2 Citations
GB 11743-1989 "Method for γ-spectrum analysis of radionuclides in soil"
EJ/T 1091-1999 "Radioactive Nuclide Activity Measurement 锗γ Spectrometer Method"
IEC 1452.1995 "Measurement and use of radionuclide gamma ray emissivity for nuclear instrumentation"
3 terms
3.1 [radioactive] activity activity
At a given moment, a certain amount of radionuclide in a particular energy state occurs spontaneously at the dt time.
The expected value dN is divided by dt. The activity symbol is A, A = dN/dt. The name of the activity unit is Beco [Ler], the symbol
Bq, 1Bq = 1 s-1.
3.2 gamma ray emission probability gamma-rayemissionprobability
The probability that radionuclide decay is accompanied by the emission of a specific energy gamma ray is usually expressed as a percentage.
3.3 gamma ray emissivity gamma-rayemissionrate
A given radioactive sample (source) that emits a specific amount of gamma rays per unit time. Gamma ray
The rate of incidence is equal to the activity multiplied by the probability of gamma ray emission.
3.4 background background
A signal that is not caused by the physical quantity to be measured. In the gamma spectroscopy measurement, it means the sample other than the sample to be tested (radiation source)
His factors include radioactivity and cosmic ray-induced peak-containing spectral data from the detector and its surroundings.
3.5 γ-ray full energy peak efficiency ful-energy-peakefficiencyforgamma-ray
For a given sample (radiation source) - detector distance, the measured energy is the gamma ray full energy peak net area of E
The ratio of the number of gamma rays emitted by the sample (radiation source) during the same time interval.
3.6 compliant plus coincidencesumming
Two or more photons from the same nuclear decay are detected simultaneously, but only one observation pulse is produced.
3.7 pulse stacking pulsepile-up
Overlapping of two successive pulses that are closely related in time but from independent decay. Measuring system usually put
These two input events are treated as a combined pulse and stored in a different energy than the two component pulse sites.
In the spectral address. Pulse stacking is a function of the square of the count rate and the pulse width of the amplifier.
3.8 half height and width fulwidthathalfmaximum
In the pulse height spectrum, the distance between the abscissas of two points at half the peak of a single peak. Half height and width are also recorded
FWHM.
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