The Behavior of Solid Hydrogen at 342 GPa

Arthur L. Ruoff; Jon Orloff; Chandrabhas Narayana

doi:10.4131/jshpreview.7.772

The Review of High Pressure Science and Technology

Online ISSN : 1348-1940
Print ISSN : 0917-639X
ISSN-L : 0917-639X

The Behavior of Solid Hydrogen at 342 GPa

Arthur L. Ruoff, Jon Orloff, Chandrabhas Narayana

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Keywords: estimated metallic transition pressure, optical transmission at pressure, refractive index at pressure, molar refraction at pressure

JOURNAL FREE ACCESS

1998 Volume 7 Pages 772-774

DOI https://doi.org/10.4131/jshpreview.7.772

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Abstract

Theoretical calculations indicate that the hydrogen molecule should depair at high pressures and eventually form a new alkali metal. The resultant alkali metal sample in the diamond anvil cell would not be transparent in the visible. Experimentally, we find that hydrogen is still transparent at 342 GPa. This represents over a 50% increase in the static pressure at which scientific studies have been made by other groups.

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