ASTM-E266 2023

$29.79

E266-23 Standard Test Method for Measuring Fast-Neutron Reaction Rates by Radioactivation of Aluminum

Published By	Publication Date	Number of Pages
ASTM	2023	4

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Category: ASTM

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Description

ASTM E266-23

Active Standard: Standard Test Method for Measuring Fast-Neutron Reaction Rates by Radioactivation of Aluminum

ASTM E266

Scope

1.1 This test method covers procedures measuring reaction rates by the activation reaction ²⁷Al(n,α)²⁴Na.

1.2 This activation reaction is useful for measuring neutrons with energies above approximately 6.5 MeV and for irradiation times up to about two days (for longer irradiations, or when there are significant variations in reactor power during the irradiation, see Practice E261).

1.3 With suitable techniques, fission-neutron fluence rates above 10⁶ cm⁻²·s⁻¹ can be determined.

1.4 Detailed procedures for other fast neutron detectors are referenced in Practice E261.

1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Keywords

activation; activation reaction; aluminum; cross section; dosimetry; fast-neutron monitor; neutron metrology; pressure vessel surveillance; reaction rate;

ICS Code

ICS Number Code 17.240 (Radiation measurements)

DOI: 10.1520/E0266-23

Additional information

Standard Title	E266-23 Standard Test Method for Measuring Fast-Neutron Reaction Rates by Radioactivation of Aluminum
Published Code	ASTM
Publication Date	2023
Pages Count	4