ASTM-E261 › Historical Revision Information
Standard Practice for Determining Neutron Fluence, Fluence Rate, and Spectra by Radioactivation Techniques
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Scope
1.1 This practice describes the general 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 E 1005.
1.4 This standard does not purport to address all 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 1—Detailed methods for individual detectors are given in the following ASTM test methods: E 262, E 263, E 264, E 265, E 266, E 343, E 393, E 418, E 481, E 523, E 526, E 704, E 705, and E 854.
Significance 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.
Keywords
activation; fluence; neutron spectrum; radioactivation; ICS Number Code 17.240 (Radiation measurements); 27.120.30 (Fissile materials and nuclear fuel technology)
To find similar documents by ASTM Volume:
12.02 (Nuclear (II), Solar, and Geothermal Energy)
To find similar documents by classification:
17.240 (Radiation measurements Including dosimetry Radiation protection, see 13.280)
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Document Number
ASTM-E261-03
Revision Level
2003 EDITION
Status
Superseded
Modification Type
Revision
Publication Date
July 10, 2003
Document Type
Practice
Page Count
10 pages
Committee Number
E10.05