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Real-time (nanoseconds) determination of liquid phase growth during shock-induced melting
Melting of solids is a fundamental natural phenomenon whose pressure dependence has been of interest for nearly a century. However, the temporal evolution of the molten phase under pressure has eluded measurements because of experimental challenges. By using the shock front as a fiducial, we investi...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Association for the Advancement of Science
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9956119/ https://www.ncbi.nlm.nih.gov/pubmed/36827368 http://dx.doi.org/10.1126/sciadv.ade5745 |
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author | Renganathan, Pritha Sharma, Surinder M. Turneaure, Stefan J. Gupta, Yogendra M. |
author_facet | Renganathan, Pritha Sharma, Surinder M. Turneaure, Stefan J. Gupta, Yogendra M. |
author_sort | Renganathan, Pritha |
collection | PubMed |
description | Melting of solids is a fundamental natural phenomenon whose pressure dependence has been of interest for nearly a century. However, the temporal evolution of the molten phase under pressure has eluded measurements because of experimental challenges. By using the shock front as a fiducial, we investigated the time-dependent growth of the molten phase in shock-compressed germanium. In situ x-ray diffraction measurements at different times (1 to 6 nanoseconds) behind the shock front quantified the real-time growth of the liquid phase at several peak stresses. These results show that the characteristic time for melting in shock-compressed germanium decreases from ~7.2 nanoseconds at 35 gigapascals to less than 1 nanosecond at 42 gigapascals. Our melting kinetics results suggest the need to consider heterogeneous nucleation as a mechanism for shock-induced melting and provide an approach to measuring melting kinetics in shock-compressed solids. |
format | Online Article Text |
id | pubmed-9956119 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-99561192023-02-25 Real-time (nanoseconds) determination of liquid phase growth during shock-induced melting Renganathan, Pritha Sharma, Surinder M. Turneaure, Stefan J. Gupta, Yogendra M. Sci Adv Physical and Materials Sciences Melting of solids is a fundamental natural phenomenon whose pressure dependence has been of interest for nearly a century. However, the temporal evolution of the molten phase under pressure has eluded measurements because of experimental challenges. By using the shock front as a fiducial, we investigated the time-dependent growth of the molten phase in shock-compressed germanium. In situ x-ray diffraction measurements at different times (1 to 6 nanoseconds) behind the shock front quantified the real-time growth of the liquid phase at several peak stresses. These results show that the characteristic time for melting in shock-compressed germanium decreases from ~7.2 nanoseconds at 35 gigapascals to less than 1 nanosecond at 42 gigapascals. Our melting kinetics results suggest the need to consider heterogeneous nucleation as a mechanism for shock-induced melting and provide an approach to measuring melting kinetics in shock-compressed solids. American Association for the Advancement of Science 2023-02-24 /pmc/articles/PMC9956119/ /pubmed/36827368 http://dx.doi.org/10.1126/sciadv.ade5745 Text en Copyright © 2023 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
spellingShingle | Physical and Materials Sciences Renganathan, Pritha Sharma, Surinder M. Turneaure, Stefan J. Gupta, Yogendra M. Real-time (nanoseconds) determination of liquid phase growth during shock-induced melting |
title | Real-time (nanoseconds) determination of liquid phase growth during shock-induced melting |
title_full | Real-time (nanoseconds) determination of liquid phase growth during shock-induced melting |
title_fullStr | Real-time (nanoseconds) determination of liquid phase growth during shock-induced melting |
title_full_unstemmed | Real-time (nanoseconds) determination of liquid phase growth during shock-induced melting |
title_short | Real-time (nanoseconds) determination of liquid phase growth during shock-induced melting |
title_sort | real-time (nanoseconds) determination of liquid phase growth during shock-induced melting |
topic | Physical and Materials Sciences |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9956119/ https://www.ncbi.nlm.nih.gov/pubmed/36827368 http://dx.doi.org/10.1126/sciadv.ade5745 |
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