Illumination of a Black-Box - Analysis of Gas-Composition during Graphite Target Preparation

TitleIllumination of a Black-Box - Analysis of Gas-Composition during Graphite Target Preparation
Publication TypeJournal Article
Year of Publication1992
AuthorsMcNichol, AP, Gagnon, AR, Jones, GA, Osborne, EA
JournalRadiocarbon
Volume34
Issue3
Pagination321-329
Date Published1992
ISBN Number0033-8222
Keywordsdeposition
Abstract

We conducted a study of relative gas composition changes of CO2, CO and CH4 during the formation of graphite targets using different temperatures, catalysts and methods. Reduction with H-2 increases the reaction rate without compromising the quality of the AMS target produced. Methane is produced at virtually any temperature, and the amount produced is greater at very low temperatures. The reduction of CO to graphite is very slow when H-2 is not included in the reaction.