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Evidence of a liquid-liquid phase transition in hot dense hydrogen.

ABSTRACT: We use pulsed-laser heating of hydrogen at static pressures in the megabar pressure region to search for the plasma phase transition to liquid atomic metallic hydrogen. We heat our samples substantially above the melting line and observe a plateau in a temperature vs. laser power curve that otherwise increases with power. This anomaly in the heating curve appears correlated with theoretical predictions for the plasma phase transition.

SUBMITTER: Dzyabura V

PROVIDER: S-EPMC3657799 | biostudies-other | 2013 May

REPOSITORIES: biostudies-other

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Evidence of a liquid-liquid phase transition in hot dense hydrogen.

Dzyabura Vasily V Zaghoo Mohamed M Silvera Isaac F IF

Proceedings of the National Academy of Sciences of the United States of America 20130429 20

We use pulsed-laser heating of hydrogen at static pressures in the megabar pressure region to search for the plasma phase transition to liquid atomic metallic hydrogen. We heat our samples substantially above the melting line and observe a plateau in a temperature vs. laser power curve that otherwise increases with power. This anomaly in the heating curve appears correlated with theoretical predictions for the plasma phase transition. ...[more]

PMID: 23630287

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