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GB/T 16698-2008: Measurement of emission rate of α particle Method for large area proportional counter
Status: Valid GB/T 16698: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 16698-2008 | English | 209 |
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Measurement of emission rate of α particle Method for large area proportional counter
| Valid |
GB/T 16698-2008
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| GB/T 16698-1996 | English | 479 |
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Measurment of emission rate of α particle. Method for large area proportional counter
| Obsolete |
GB/T 16698-1996
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PDF similar to GB/T 16698-2008
Basic data | Standard ID | GB/T 16698-2008 (GB/T16698-2008) | | Description (Translated English) | Measurement of emission rate of �� particle Method for large area proportional counter | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | F04 | | Classification of International Standard | 17.240 | | Word Count Estimation | 9,997 | | Date of Issue | 2008-09-19 | | Date of Implementation | 2009-08-01 | | Older Standard (superseded by this standard) | GB/T 16698-1996 | | Quoted Standard | GB/T 4960.4, JJF 1059 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 16 of 2008 (No. 129 overall) | | 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 gas flow with a large area multi-wire proportional counter tube 2�� absolute measurement of �� particle emission rate of the principle, apparatus, method, and data processing. This standard applies to area of ??not more than 170mmX130mm, and a particle emission rate 1X10s-1 ~ 1X104s-1 (2�� sr) range �� plane source. This standard can also be used as �� particle emission rate measurement reference. | GB/T 16698-2008: Measurement of emission rate of α particle Method for large area proportional counter
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Measurement of emission rate of α particle Method for large area proportional counter
ICS 17.240
F04
National Standards of People's Republic of China
Replacing GB/T 16698-1996
Measuring α particle emission rate
A large area proportional counter tube method
Posted 2008-09-19
2009-08-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard replaces GB/T 16698-1996 "α particle emission rate measurement of a large area proportional counter tube method." This standard
GB/T 16698-1996 main changes are as follows.
a) the proportional counter tube by the 1996 version of the standard and size of 170mm × 120mm to 170mm × 130mm;
b) delete the 1996 version of the standard in Chapter 4 on proportional tube working gas, pre-amplifier, high voltage power supply, the main amplifier, single channel pulse
Analyzer dead time control circuit and a scaler content requirements;
c) The 1996 version of the standard 5.3.1 f) items to be restated;
d) Remove 1996 version of the standard in Appendix C.
The Standard Annexes A and B are normative appendix.
The standard proposed by China National Nuclear Corporation.
This standard by the National Standardization Technical Committee of nuclear energy.
This standard was drafted. China Institute of Atomic Energy isotopes.
The main drafters of this standard. Yao Li-nung, Xiaojing, Zhang in, Qi Jie.
This standard replaces the previous standard release case. GB/T 16698-1996.
Measuring α particle emission rate
A large area proportional counter tube method
1 Scope
This standard specifies the gas-flow with a large area multi-wire proportional counter 2π absolute measurement of α particle emission rate principle, means, methods and number
Data processing and the like.
This standard applies to an area no larger than 170mm × 130mm, and the α particle emission rate of 1 × 10s-1 ~ 1 × 104s-1 (2πsr) Fan
Α plane around the source.
This standard can also be used as β particle emission measurement reference.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 4960.4 radionuclides in nuclear science and technology terms
JJF1059 Evaluation and Expression of Uncertainty in Measurement
3 Terms and Definitions
GB/T terms and definitions as well as the following terms and JJF1059 established 4960.4 apply to this standard.
3.1
Surface emission rate is emitted per unit time source surface (or window) has an energy greater than a given number of certain particles.
3.2
A system for measuring large-area sources, in proportional area of \u200b\u200bgas ionization detector.
4 Fundamentals
Large 2π multifilament windowless gas flow proportional counter tube (hereinafter referred to as proportional tube) is an anode by a plurality of parallel wires, can be measured Omo
Plot α, β plane source particle emission rate is proportional counter tube, usually using gas-flow work, its intrinsic detection efficiency of α particles close
100%. When measuring the source into the proportional tube, α particles of the working gas ionization to produce positive and negative ions, after gas amplification, the anode may lose
That is proportional to the particle energy electrical pulse which is amplified after the screening scalers record. Pulse count rate α particle and proportional control work
After the relationship between voltage may form a plateau curves, count rate in the floor area of \u200b\u200ba point source of α, by the end of this dead time correction and small energy losses, you can
Get tested source of surface emissivity α particles.
5 Measurement System
Composition 5.1 Measurement System
Proportional system consists of pipes, the working gas, electronic equipment, working source and other components. 1 by proportional tube working gas, high voltage power supply, preamplifier
Amplifier, main amplifier, single channel pulse analyzer dead time control circuit and a scaler and other electronic equipment components of the measurement system block diagram.
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