ASTM-E263 Standard Test Method for Measuring Fast-Neutron Reaction Rates by Radioactivation of Iron

ASTM-E263 - 2013 EDITION - CURRENT
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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 E261).

1.3 With suitable techniques, fission-neutron fluence rates above 108 cm−2·s−1 can be determined. However, in the presence of a high thermal-neutron fluence rate (for example, >2 × 1014 cm−2·s −1) 54Mn depletion should be investigated.

1.4 Detailed procedures describing the use of other fast-neutron detectors are referenced in Practice E261.

1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.6 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; reaction 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)

27.120.30 (Fissile materials and nuclear fuel technology Including raw materials Radioactive wastes, see 13.030.30)

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Document Number

ASTM-E263-13

Revision Level

2013 EDITION

Status

Current

Modification Type

Revision

Publication Date

July 15, 2013

Document Type

Test Method

Page Count

5 pages

Committee Number

E10.05