Prompt-gamma activation analysis

1 January 1993

journal article
Published by National Institute of Standards and Technology (NIST) in Journal of Research of the National Institute of Standards and Technology

Vol. 98 (1) , 127-133
https://doi.org/10.6028/jres.098.009

Abstract

A permanent, full-time instrument for prompt-gamma activation analysis is nearing completion as part of the Cold Neutron Research Facility (CNRF). The design of the analytical system has been optimized for high gamma detection efficiency and low background, particularly for hydrogen. Because of the purity of the neutron beam, shielding requirements are modest and the scatter-capture background is low. As a result of a compact sample-detector geometry, the sensitivity (counting rate per gram of analyte) is a factor of four better than the existing Maryland-NIST thermal-neutron instrument at this reactor. Hydrogen backgrounds of a few micrograms have already been achieved, which promises to be of value in numerous applications where quantitative nondestructive analysis of small quantities of hydrogen in materials is necessary.

Keywords

This publication has 3 references indexed in Scilit:

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