ASTM-E263 › Historical Revision Information
Standard Test Method for Measuring Fast-Neutron Reaction Rates by Radioactivation of Iron
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Scope
1.1 This test method describes procedures for measuring reaction rates by the activation reaction 54Fe(n,p)54Mn.
1.2 This activation reaction is useful for measuring neutrons with energies above approximately 2.2 MeV and for irradiation times up to about 3 years (for longer irradiations, see Practice E 261).
1.3 With suitable techniques, fission-neutron fluence rates above 108 cm2s1 can be determined. However, in the presence of a high thermal-neutron fluence rate (for example, >2 1014 cm2s 1) 54Mn depletion should be investigated.
1.4 Detailed procedures describing the use of other fast-neutron detectors are referenced in Practice E 261.
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.
Keywords
fast neutron detector; iron activation; reatction rate; 54Fe (n,p); 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-E263-05
Revision Level
2005 EDITION
Status
Superseded
Modification Type
Revision
Publication Date
Jan. 1, 2005
Document Type
Test Method
Page Count
4 pages
Committee Number
E10.05