Publisher: Springer Science and Business Media LLC

Issue: 1

License: [{"start"=>{"date-parts"=>[[2015, 10, 30]], "date-time"=>"2015-10-30T00:00:00Z", "timestamp"=>1446163200000}, "content-version"=>"tdm", "delay-in-days"=>0, "URL"=>"https://creativecommons.org/licenses/by/4.0"}, {"start"=>{"date-parts"=>[[2015, 10, 30]], "date-time"=>"2015-10-30T00:00:00Z", "timestamp"=>1446163200000}, "content-version"=>"vor", "delay-in-days"=>0, "URL"=>"https://creativecommons.org/licenses/by/4.0"}]

Publication date(s): 2015/10/30 (online)

Pages:

Volume: 5 Issue: 1

Journal: Scientific Reports

Link: [{"URL"=>"https://www.nature.com/articles/srep15979", "content-type"=>"text/html", "content-version"=>"vor", "intended-application"=>"text-mining"}, {"URL"=>"https://www.nature.com/articles/srep15979.pdf", "content-type"=>"application/pdf", "content-version"=>"vor", "intended-application"=>"text-mining"}, {"URL"=>"https://www.nature.com/articles/srep15979.pdf", "content-type"=>"application/pdf", "content-version"=>"vor", "intended-application"=>"similarity-checking"}]

AbstractWe report the development of laboratory based hyperspectral X-ray computed tomography which allows the internal elemental chemistry of an object to be reconstructed and visualised in three dimensions. The method employs a spectroscopic X-ray imaging detector with sufficient energy resolution to distinguish individual elemental absorption edges. Elemental distributions can then be made by K-edge subtraction, or alternatively by voxel-wise spectral fitting to give relative atomic concentrations. We demonstrate its application to two material systems: studying the distribution of catalyst material on porous substrates for industrial scale chemical processing; and mapping of minerals and inclusion phases inside a mineralised ore sample. The method makes use of a standard laboratory X-ray source with measurement times similar to that required for conventional computed tomography.