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Indirect evidence for elemental hydrogen in laser-compressed hydrocarbons
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(2023) Indirect evidence for elemental hydrogen in laser-compressed hydrocarbons. Physical Review Research, 5 (2). L022023. doi:10.1103/PhysRevResearch.5.L022023 ISSN 2643-1564.
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WRAP-indirect-evidence-elemental-hydrogen-laser-compressed-hydrocarbons-2023.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (977Kb) | Preview |
Official URL: http://dx.doi.org/10.1103/PhysRevResearch.5.L02202...
Abstract
We demonstrate a significantly simplified experimental approach for investigating liquid metallic hydrogen, which is crucial to understand the internal structure and evolution of giant planets. Plastic samples were shock-compressed and then probed by short pulses of X-rays generated by free electron lasers. By comparison with ab initio simulations, we provide indirect evidence for the creation of elemental hydrogen in shock-compressed plastics at ∼150 GPa and ∼5, 000 K and thus in a regime where hydrogen is predicted to be metallic. Being the most common form of condensed matter in our solar system, and ostensibly the simplest of all elements, hydrogen is the model case for many theoretical studies and we provide a new possibility to benchmark models for conditions with extreme pressures and temperatures. Moreover, this approach will also allow to probe the chemical behavior of metallic hydrogen in mixture with other elements, which, besides its importance for planetary physics, may open up promising pathways for the synthesis of new materials.
Item Type: | Journal Article | ||||||||||||||||||||||||||||||
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Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Astrophysics, High-density plasmas, Plasma (Ionized gases), Nuclear astrophysics, Hydrogen | ||||||||||||||||||||||||||||||
Journal or Publication Title: | Physical Review Research | ||||||||||||||||||||||||||||||
Publisher: | American Physical Society | ||||||||||||||||||||||||||||||
ISSN: | 2643-1564 | ||||||||||||||||||||||||||||||
Official Date: | 3 May 2023 | ||||||||||||||||||||||||||||||
Dates: |
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Volume: | 5 | ||||||||||||||||||||||||||||||
Number: | 2 | ||||||||||||||||||||||||||||||
Article Number: | L022023 | ||||||||||||||||||||||||||||||
DOI: | 10.1103/PhysRevResearch.5.L022023 | ||||||||||||||||||||||||||||||
Status: | Peer Reviewed | ||||||||||||||||||||||||||||||
Publication Status: | Published | ||||||||||||||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||||||||||||||||||||
Date of first compliant deposit: | 6 June 2023 | ||||||||||||||||||||||||||||||
Date of first compliant Open Access: | 8 June 2023 | ||||||||||||||||||||||||||||||
RIOXX Funder/Project Grant: |
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