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Title: Probing of the hydrogen melting line at high pressures by dynamic compression

Journal Article · · Physical Review Letters

We investigate the capabilities of dynamic compression by intense heavy ion beams to yield information about the high pressure phases of hydrogen. Employing ab initio simulations and experimental data, a new wide range equation of state for hydrogen that covers solid, fluid, gas and plasma phases has been constructed for our hydrodynamic simulations. The results show that the melting line up to its maximum as well as the transition from the molecular fl fluid to the fully ionized, metallic phase can be tested with the beam parameters available at the upcoming FAIR facility at GSI-Darmstadt. Using the structural information from the ab initio simulations, we also demonstrate that x-ray scattering is capable of extracting the information about the structure and the dissociation state.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
947228
Report Number(s):
LLNL-JRNL-404786; PRLTAO; TRN: US0901824
Journal Information:
Physical Review Letters, Vol. 101; ISSN 0031-9007
Country of Publication:
United States
Language:
English

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