Melting curve and new phases of hydrogen hydrate in the GPa range: a missing piece of information for planetary modelling
Hydrogen hydrates are among the basic constituents of our solar system¿s outer planets, some of their moons, as well Neptune-like exo-planets. The structures that hydrogen-hydrate can form in the 0.1-10 GPa range, as well as their stability at high temperature are fundamental missing piece of information for establishing the presence of hydrogen hydrates against the one of pure components in the interior of those celestial bodies. We propose to determine by neutron diffraction measurements under high pressure on the high flux diffractometer D20: i) the melting curve of the C2 phase from 2.5 GPa (400 K) to 6.5 GPa (600 K). Those measurements will be complemented by HP Raman scattering measurements of the melting curve but neutrons are needed to properly distinguish ice VII melting from hydrate melting. ii)the possible existence of other unknown phases in the low temperature/high pressure range
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The recommended format for citing this dataset in a research publication is in the following format:
BOVE Livia Eleonora; R. Gaal; Thomas C. Hansen; KLOTZ Stefan; RANIERI Umbertoluca; RESCIGNO Maria and Tobie. (2023). Melting curve and new phases of hydrogen hydrate in the GPa range: a missing piece of information for planetary modelling. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-24-703
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