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The effect of deuteration on the optical spectra of compressed methane

Pruteanu, CG; (2019) The effect of deuteration on the optical spectra of compressed methane. AIP Advances , 9 (4) , Article 045033. 10.1063/1.5095851. Green open access

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Abstract

The in situ high pressure Raman spectrum of CD_{4} was found to be subtly different from its’ hydrogenous analog, CH_{4}. High quality data were obtained for the first time for pressures between 12 and 20 GPa during both fast and slow compression. Similarly to CH_{4} in phase B, CD_{4} does exhibit peak splitting in the ν_{1} (symmetric stretch) and ν_{3} (antisymmetric stretch) modes, but having the emergent shoulders present on the high-frequency side of the peaks rather than the low-frequency one as in the case of CH_{4}. The general aspect of the Raman spectrum was found to be very different from that of CH_{4}, with modes ν_{1} and ν_{3} having comparable intensities and the latter being sharper and better defined, in stark contrast to how it appears in CH_{4}.

Type: Article
Title: The effect of deuteration on the optical spectra of compressed methane
Open access status: An open access version is available from UCL Discovery
DOI: 10.1063/1.5095851
Publisher version: https://doi.org/10.1063/1.5095851
Language: English
Additional information: © Author(s) 2019. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/10074852
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