XPCS at elevated pressure and cryogenic temperatures: Multicomponent dynamics in amorphous ice | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article XPCS at elevated pressure and cryogenic temperatures: Multicomponent dynamics in amorphous ice Katrin Amann-Winkel, Aigerim Karina, Hailong Li, Tobias Eklund, and 15 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4619225/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 16 Mar, 2025 Read the published version in Communications Chemistry → Version 1 posted You are reading this latest preprint version Abstract Knowing the pressure dependence of glass forming liquids is important in various contexts. Here, we study the case of supercooled water, which has at least two different amorphous states with different densities. The pressure dependencies of the two glass transitions are predicted to show opposite behaviour, crossing in the P-T plane at elevated pressure. While the experimental identification of the glass transition at elevated pressure and cold temperatures is technically difficult, measurements on bulk water and amorphous ices are even more challenging, as the glass transition is interrupted by crystallization. We show the feasibility of performing X-ray photon correlation spectroscopy (XPCS) experiments at elevated pressure using a diamond anvil cell (DAC) at cryogenic temperatures. We observe two dynamic components when approaching the glass transition temperature. For high-density amorphous ice at a pressure of around 0.08 GPa we determine the glass transition to be at higher temperatures compared to ambient conditions. Full Text Additional Declarations There is NO Competing Interest. Supplementary Files SIDACXPCSKarinaetal.pdf Cite Share Download PDF Status: Published Journal Publication published 16 Mar, 2025 Read the published version in Communications Chemistry → Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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