Suppression of X-ray-induced dissociation of H(2)O molecules in dense ice under pressure

We investigated molecular dissociation induced by 10-keV X-ray irradiation in dense ice at pressures up to 40 GPa at 300 K. The dissociation yield estimated from the oxygen K-edge X-ray Raman spectra, showed that the molecular dissociation was enhanced up to 14 GPa and gradually suppressed on furthe...

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Autores principales: Fukui, Hiroshi, Hiraoka, Nozomu, Hirao, Naohisa, Aoki, Katsutoshi, Akahama, Yuichi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4879601/
https://www.ncbi.nlm.nih.gov/pubmed/27221010
http://dx.doi.org/10.1038/srep26641
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author Fukui, Hiroshi
Hiraoka, Nozomu
Hirao, Naohisa
Aoki, Katsutoshi
Akahama, Yuichi
author_facet Fukui, Hiroshi
Hiraoka, Nozomu
Hirao, Naohisa
Aoki, Katsutoshi
Akahama, Yuichi
author_sort Fukui, Hiroshi
collection PubMed
description We investigated molecular dissociation induced by 10-keV X-ray irradiation in dense ice at pressures up to 40 GPa at 300 K. The dissociation yield estimated from the oxygen K-edge X-ray Raman spectra, showed that the molecular dissociation was enhanced up to 14 GPa and gradually suppressed on further compression to 40 GPa. The molecular dissociation was detected for a rather narrow pressure span of 2–40 GPa by the X-ray spectroscopy. The pressure variation of the dissociation yield was similar to that observed in the electric conductivity of ice VII and likely interpreted in terms of proton mobility.
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spelling pubmed-48796012016-06-07 Suppression of X-ray-induced dissociation of H(2)O molecules in dense ice under pressure Fukui, Hiroshi Hiraoka, Nozomu Hirao, Naohisa Aoki, Katsutoshi Akahama, Yuichi Sci Rep Article We investigated molecular dissociation induced by 10-keV X-ray irradiation in dense ice at pressures up to 40 GPa at 300 K. The dissociation yield estimated from the oxygen K-edge X-ray Raman spectra, showed that the molecular dissociation was enhanced up to 14 GPa and gradually suppressed on further compression to 40 GPa. The molecular dissociation was detected for a rather narrow pressure span of 2–40 GPa by the X-ray spectroscopy. The pressure variation of the dissociation yield was similar to that observed in the electric conductivity of ice VII and likely interpreted in terms of proton mobility. Nature Publishing Group 2016-05-25 /pmc/articles/PMC4879601/ /pubmed/27221010 http://dx.doi.org/10.1038/srep26641 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Fukui, Hiroshi
Hiraoka, Nozomu
Hirao, Naohisa
Aoki, Katsutoshi
Akahama, Yuichi
Suppression of X-ray-induced dissociation of H(2)O molecules in dense ice under pressure
title Suppression of X-ray-induced dissociation of H(2)O molecules in dense ice under pressure
title_full Suppression of X-ray-induced dissociation of H(2)O molecules in dense ice under pressure
title_fullStr Suppression of X-ray-induced dissociation of H(2)O molecules in dense ice under pressure
title_full_unstemmed Suppression of X-ray-induced dissociation of H(2)O molecules in dense ice under pressure
title_short Suppression of X-ray-induced dissociation of H(2)O molecules in dense ice under pressure
title_sort suppression of x-ray-induced dissociation of h(2)o molecules in dense ice under pressure
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4879601/
https://www.ncbi.nlm.nih.gov/pubmed/27221010
http://dx.doi.org/10.1038/srep26641
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