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Study of a Rhombohedral Graphite x-ray filter using the sphere-in-contact model

Study of a Rhombohedral Graphite x-ray filter using the sphere-in-contact model

Zeinalipour-Yazdi, Constantinos ORCID: 0000-0002-8388-1549 and Pullman, David (2019) Study of a Rhombohedral Graphite x-ray filter using the sphere-in-contact model. Chemical Physics Letters, 734:136717. ISSN 0009-2614 (doi:https://doi.org/10.1016/j.cplett.2019.136717)

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Abstract

We have studied with the sphere-in-contact model the structure of rhombohedral graphite and found that there are molecular channels 22.7 degrees with respect to the material symmetry axis. We show via theoretical simulations with the Laue equation, Kramers equation and Duane-Hunt law that X-ray radiation (λ < 1.34 Å) that is traveling along these molecular channels would have a larger mean-free-path. This suggests that stacks of rhombohedral graphite can become effective filters for X-ray sources, such as the ones used in Laue photography and other X-ray techniques that use Bremsstrahlung.

Item Type: Article
Uncontrolled Keywords: Rhombohedral Graphite, x-ray filter, sphere-in-contact, hexagonal graphite, physical molecular models
Subjects: Q Science > QD Chemistry
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Department of Pharmaceutical, Chemical and Environmental Sciences
Last Modified: 30 Sep 2019 08:40
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
Selected for GREAT 2019: None
URI: http://gala.gre.ac.uk/id/eprint/25035

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