Standard Test Method for Determination of Effective Boron-10 Areal Density in Aluminum Neutron Absorbers using Neutron Attenuation Measurements

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

12-24-2020

Publisher

American Society for Testing and Materials

1.1This test method is intended for quantitative determination of effective boron-10 (¹⁰B) areal density (mass per area of ¹⁰B, usually measured in grams-¹⁰B/cm² ) in aluminum neutron absorbers. The attenuation of a thermal neutron beam transmitted through an aluminum neutron absorber is compared to attenuation values for calibration standards allowing determination of the effective ¹⁰B areal density. This test is typically performed in a laboratory setting. This method is valid only under the following conditions:

1.1.1The absorber contains ¹⁰B in an aluminum or aluminum alloy matrix.

1.1.2The primary neutron absorber is ¹⁰B.

1.1.3The test specimen has uniform thickness.

1.1.4The test specimen has a testing surface area at least twice that of the thermal neutron beam’s surface cross-sectional area.

1.1.5The calibration standards of uniform composition span the range of areal densities being measured.

1.1.6The areal density is between 0.001 and 0.080 grams of ¹⁰B per cm².

1.1.7The thermalized neutron beam is derived from a fission reactor, sub-critical assembly, accelerator or neutron generator.

1.2The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3This 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.

1.4This 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.

Committee	E 07
DocumentType	Test Method
Pages	4
PublisherName	American Society for Testing and Materials
Status	Current
Supersedes	ASTM E 2971 : 2016

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