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GB/T 11713-2015: General analytical methods of high-purity germanium gamma spectrometer
Status: Valid GB/T 11713: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 11713-2015 | English | 359 |
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General analytical methods of high-purity germanium gamma spectrometer
| Valid |
GB/T 11713-2015
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| GB/T 11713-1989 | English | 479 |
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Standard methods of analyzing low specific gamma radioactivity samples by semiconductor gamma spectrometers
| Obsolete |
GB/T 11713-1989
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PDF similar to GB/T 11713-2015
Basic data | Standard ID | GB/T 11713-2015 (GB/T11713-2015) | | Description (Translated English) | General analytical methods of high-purity germanium gamma spectrometer | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | C57 | | Classification of International Standard | 13.280 | | Word Count Estimation | 17,142 | | Date of Issue | 2015-06-02 | | Date of Implementation | 2016-01-01 | | Older Standard (superseded by this standard) | GB/T 11713-1989 | | Regulation (derived from) | National Standard Announcement 2015 No.19 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This Standard specifies the use of high-purity germanium (HPGe) �� spectrometer analysis of the general method of sample �� radionuclides. This Standard applies to measurements in the laboratory analysis ��-ray energy greater than 40 keV and the characteristic lines can tell apart �� radionuclides. | GB/T 11713-2015: General analytical methods of high-purity germanium gamma spectrometer---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.
General analytical methods of high-purity germanium gamma spectrometer
ICS 13.280
C57
National Standards of People's Republic of China
Replacing GB 11713-1989
General purity germanium γ spectrum analysis method
Issued on. 2015-06-02
2016-01-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅲ
1 Scope 1
2 Terms and definitions 1
3 spectrometer configuration and main components of the basic requirements of 2
4 scale system calibration source and 3
5 samples measuring 6
6 6 Calculation
7 7 Report
Appendix A (informative) energy calibration with single and multi-energy energy nuclide 9
Appendix B (Normative Appendix) γ spectrometer calibration source preparation 10
Appendix C (Normative Appendix) γ ray spectrometry detection limit 12
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard replaces GB 11713-1989 "semiconductor γ spectrometer analysis is lower than the standard method of activity γ radioactive samples." This standard
Compared with GB 11713-1989, the main technical changes are as follows.
--- Standard name was changed to "high purity germanium γ spectrum analysis of the general method";
--- By the mandatory nature of standards instead recommended;
--- Modify the probe used for the measurement of HPGe detectors, and modify the energy resolution and detection efficiency and other relevant parameters
Claim;
--- Increasing the intrinsic detection efficiency, the relative detection efficiency and minimum detectable limit of three terms;
--- Modified γ spectrometer for high-voltage, spectrum amplifiers, multi-channel pulse amplitude analyzer requirements;
--- Added "calibration source traceability";
--- Increasing the calculation method of energy calibration curve;
--- Added Appendix C "γ spectrometer calibration source preparation."
This standard is proposed and managed by the National Health and Family Planning Commission People's Republic of China.
This standard was drafted. Chinese Center for Disease Control Radiation Protection and Nuclear Safety, Central Hainan Disease Control and Prevention, Kyrgyzstan
Forest University School of Public Health.
The main drafters of this standard. Xu Cuihua, Zhao, Zhou Qiang, extension fly, Wangchuan Jian, Lu Yan, Zhang Qing, Ren Tian, \u200b\u200bZhang Jing, Li Hong, Zhang Jianfeng.
This standard was first released in September 1989.
General purity germanium γ spectrum analysis method
1 Scope
This standard specifies the use of high-purity germanium (HPGe) γ spectrometer analysis of the general method of sample γ radionuclides.
This standard applies to the measurement in the laboratory analysis of γ-ray energy above 40keV and characteristic lines can tell apart γ radionuclides.
2 Terms and definitions
The following terms and definitions apply to this document.
2.1
Intrinsic detection efficiency intrinsicdetectionefficiency
To represent the performance parameters of the detector itself. It is equal to the number of pulses recorded incident on the detector sensitive γ photon number within the volume of
ratio.
2.2
Relative detection efficiency relativedetectionefficiency
When the former source to the probe surface distance of 25cm, HPGe detector and standard cylindrical NaI (Tl) scintillation crystal (φ × h.
7.62cm × 7.62cm) detector measures the ratio of 60Co source 1332.5keVγ ray total absorption peak area.
2.3
Nuclide total absorption peak detection efficiency totalabsorptiondetectionefficiencyfornuclide
For a given measurement conditions and the energy of the nuclide emitted radiation Eγ γ characteristic, the net count detected within the entire absorption peaks within
The number of radiation sources within the same time interval in the ratio of total decay of the nuclides.
2.4
γ-ray total absorption peak detection efficiency totalabsorptiondetectionefficiencyforgamma-ray
For net count and at the same time a given measurement conditions and γ-ray energy, the total absorption peak is detected within the interval radiation source
γ-ray ratio of the total energy.
2.5
Background background
When no test radiation source (sample), other factors, such as cosmic rays, radioactive contamination, electromagnetic interference in the studied energy range of the spectrum
Resulting count.
2.6
Full peak full width at half fulwidthathalfmaximum; FWHM
Only the upper constituted unimodal distribution, the peak (maximum) at half the full width (distance between two points between the horizontal axis), the half-width.
2.7
Energy resolution energyresolution
Energy resolution of the detector different but very similar incident γ rays. Energy resolution γ-ray energy incident related to
Specified monoenergetic γ-ray energy, the energy of Full absorption peak of the full width at half represented.
2.8
Compton scattering interference disturbancefromComptonscattering
A plurality of radiation-emitting energy γ-rays, where higher energy γ-ray Compton scattering count on lower energy γ-ray absorption whole
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