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Description of ASTM-E261 2010ASTM E261 - 10Standard Practice for Determining Neutron Fluence, Fluence Rate, and Spectra by Radioactivation TechniquesActive Standard ASTM E261 | Developed by Subcommittee: E10.05 Book of Standards Volume: 12.02 ASTM E261Significance and Use Transmutation Processes The effect on materials of bombardment by neutrons depends on the energy of the neutrons; therefore, it is important that the energy distribution of the neutron fluence, as well as the total fluence, be determined. 1. Scope 1.1 This practice describes procedures for the determination of neutron fluence rate, fluence, and energy spectra from the radioactivity that is induced in a detector specimen. 1.2 The practice is directed toward the determination of these quantities in connection with radiation effects on materials. 1.3 For application of these techniques to reactor vessel surveillance, see also Test Methods E1005 . 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. Note 1Detailed methods for individual detectors are given in the following ASTM test methods: E262 , E263 , E264 , E265 , E266 , E343 , E393 , E481 , E523 , E526 , E704 , E705 , and E854 .
ASTM Standards E170 Terminology Relating to Radiation Measurements and Dosimetry E181 Test Methods for Detector Calibration and Analysis of Radionuclides E262 Test Method for Determining Thermal Neutron Reaction Rates and Thermal Neutron Fluence Rates by Radioactivation Techniques E263 Test Method for Measuring Fast-Neutron Reaction Rates by Radioactivation of Iron E264 Test Method for Measuring Fast-Neutron Reaction Rates by Radioactivation of Nickel E265 Test Method for Measuring Reaction Rates and Fast-Neutron Fluences by Radioactivation of Sulfur-32 E266 Test Method for Measuring Fast-Neutron Reaction Rates by Radioactivation of Aluminum E343 Test Method for Measuring Reaction Rates by Analysis of Molybdenum-99 Radioactivity From Fission Dosimeters E393 Test Method for Measuring Reaction Rates by Analysis of Barium-140 From Fission Dosimeters E481 Test Method for Measuring Neutron Fluence Rates by Radioactivation of Cobalt and Silver E523 Test Method for Measuring Fast-Neutron Reaction Rates by Radioactivation of Copper E526 Test Method for Measuring Fast-Neutron Reaction Rates by Radioactivation of Titanium E693 Practice for Characterizing Neutron Exposures in Iron and Low Alloy Steels in Terms of Displacements Per Atom (DPA), E 706(ID) E704 Test Method for Measuring Reaction Rates by Radioactivation of Uranium-238 E705 Test Method for Measuring Reaction Rates by Radioactivation of Neptunium-237 E722 Practice for Characterizing Neutron Fluence Spectra in Terms of an Equivalent Monoenergetic Neutron Fluence for Radiation-Hardness Testing of Electronics E844 Guide for Sensor Set Design and Irradiation for Reactor Surveillance, E 706 (IIC) E854 Test Method for Application and Analysis of Solid State Track Recorder (SSTR) Monitors for Reactor Surveillance, E706(IIIB) E944 Guide for Application of Neutron Spectrum Adjustment Methods in Reactor Surveillance, E 706 (IIA) E1005 Test Method for Application and Analysis of Radiometric Monitors for Reactor Vessel Surveillance, E 706 (IIIA) E1018 Guide for Application of ASTM Evaluated Cross Section Data File, Matrix E706 (IIB) E2005 Guide for Benchmark Testing of Reactor Dosimetry in Standard and Reference Neutron Fields ISO Standard GuideintheExpressionKeywords activation; fluence; neutron spectrum; radioactivation; Decay rates; Fluence; Lethargy; Neutron flux/fluence; Neutron radiation--nuclear materials/applications; Radiation exposure--nuclear materials/applications; Radioactivation--fast neutron flux; Resonance neutron flux; Spectral data; ICS Code ICS Number Code 17.240 (Radiation measurements); 27.120.30 (Fissile materials and nuclear fuel technology) DOI: 10.1520/E0261-10 ASTM International is a member of CrossRef. ASTM E261The following editions for this book are also available...This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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