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    ASTM E262-03

    Standard Method for Determining Thermal Neutron Reaction and Fluence Rates by Radioactivation Techniques
    • 발행일 : 2003-02-10
    • 발행기관 : ASTM
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분야 12.02 : 원자력 (Ⅱ), 태양 및 지열에너지
적용범위

1.1 The purpose of this method is to define a general procedure for determining an unknown thermal neutron-fluence rate by neutron activation techniques. It is not practicable to describe completely a technique applicable to the large number of experimental situations that require the measurement of a thermal-neutron fluence rate. Therefore, this method is presented so that the user may adapt to his particular situation the fundamental procedures of the following techniques.

1.1.1 Absolute counting technique using pure cobalt, pure gold, or cobalt-aluminum or gold-aluminum alloy.

1.1.2 Standard foil technique using pure gold, or gold-aluminum alloy, and

1.1.3 Secondary standard foil techniques using pure indium, indium-aluminum alloy, and dysprosium-aluminum alloy.

1.2 The techniques presented are limited to measurements at room temperatures. However, special problems when making thermal-neutron fluence rate measurements in high-temperature environments are discussed in . For those circumstances where the use of cadmium as a thermal shield is undesirable because of potential spectrum perturbations or of temperatures above the melting point of cadmium, the method described in Test Method E 481 can be used in some cases. Alternatively, gadolinium filters may be used instead of cadmium. For high temperature applications in which aluminum alloys are unsuitable, other alloys such as cobalt-nickel or cobalt-vanadium have been used.

1.3 indicates the useful neutron-fluence ranges for each detector material.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

국제분류(ICS)코드
페이지수 9
Edition 03

이력정보

No. 표준번호 표준명 발행일 상태
1 ASTM E262-17(2024)e1상세보기 Standard Test Method for Determining Thermal Neutron Reaction Rates and Thermal Neutron Fluence Rates by Radioactivation Techniques 2024-05-01 표준
2 ASTM E262-17상세보기 Standard Test Method for Determining Thermal Neutron Reaction Rates and Thermal Neutron Fluence Rates by Radioactivation Techniques 2017-08-01 구판
3 ASTM E262-17 REDLINE상세보기 Standard Test Method for Determining Thermal Neutron Reaction Rates and Thermal Neutron Fluence Rates by Radioactivation Techniques 2017-08-01 구판
4 ASTM E262-13상세보기 Standard Test Method for Determining Thermal Neutron Reaction Rates and Thermal Neutron Fluence Rates by Radioactivation Techniques 2013-01-01 구판
5 ASTM E262-08상세보기 Standard Test Method for Determining Thermal Neutron Reaction Rates and Thermal Neutron Fluence Rates by Radioactivation Techniques 2008-11-01 구판
6 ASTM E262-03상세보기 Standard Method for Determining Thermal Neutron Reaction and Fluence Rates by Radioactivation Techniques 2003-02-10 구판
7 ASTM E262-97상세보기 Standard Method for Determining Thermal Neutron Reaction and Fluence Rates by Radioactivation Techniques 1997-06-10 구판

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