Search Menu
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information
Search Scholarly Publications

Title: Indirect evidence for elemental hydrogen in laser-compressed hydrocarbons

Journal Article · · Physical Review Research
ORCiD logo [1];  [2]; ORCiD logo [3];  [1];  [4];  [2];  [5];  [6];  [7];  [6];  [8];  [6];  [9];  [6];  [6];  [10];  [11];  [11];  [12];  [13] more »;  [11];  [14];  [15];  [6];  [16];  [11];  [5];  [17];  [7];  [4];  [18];  [14];  [6];  [10];  [4];  [10]; ORCiD logo [10] « less
  1. University of Rostock (Germany); Helmholtz-Zentrum Dresden-Rossendorf (Germany)
  2. Helmholtz-Zentrum Dresden-Rossendorf (Germany)
  3. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Helmholtz-Zentrum Dresden-Rossendorf (Germany)
  4. Helmholtz-Zentrum Dresden-Rossendorf (Germany); Technische Universität Dresden (Germany)
  5. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
  6. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
  7. University of California, Berkeley, CA (United States)
  8. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Technische Universität Darmstadt (Germany)
  9. University of Warwick, Coventry (United Kingdom)
  10. Japan Synchrotron Radiation Research Institute, Sayo, Hyogo (Japan); RIKEN SPring-8 Center, Sayo (Japan)
  11. Osaka University (Japan)
  12. University of Michigan, Ann Arbor, MI (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
  13. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
  14. RIKEN SPring-8 Center, Sayo (Japan)
  15. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); European XFEL, Schenefeld (Germany)
  16. GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany)
  17. Sorbonne Université, Paris (France); Centre National de la Recherche Scientifique (CNRS) (France); Alternative Energies and Atomic Energy Commission (CEA) (France); Ecole Polytechnique, Palaiseau (France)
  18. University of Rostock (Germany)
+ Show Author Affiliations

We demonstrate a significantly simplified experimental approach for investigating liquid metallic hydrogen, which is crucial to understand the internal structure and evolution of giant planets. Plastic samples were shockcompressed and then probed by short pulses of X-rays generated by free electron lasers. By comparison with ab initio simulations, we provide indirect evidence for the creation of elemental hydrogen in shock-compressed plastics at ~150 GPa and ~5,000 K and thus in a regime where hydrogen is predicted to be metallic. Being the most common form of condensed matter in our solar system, and ostensibly the simplest of all elements, hydrogen is the model case for many theoretical studies and we provide a new possibility to benchmark models for conditions with extreme pressures and temperatures. Moreover, this approach will also allow to probe the chemical behavior of metallic hydrogen in mixture with other elements, which, besides its importance for planetary physics, may open up promising pathways for the synthesis of new materials.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE National Nuclear Security Administration (NNSA) U.S. Department of Energy
Grant/Contract Number:
AC52-07NA27344; AC02-05CH11231; NA0003842; FWP 100182; AC02-76SF00515
OSTI ID:
1972404
Alternate ID(s):
OSTI ID: 1995061; OSTI ID: 2001099
Report Number(s):
LLNL-JRNL-853171; 1077801; TRN: US2405016
Journal Information:
Physical Review Research, Vol. 5, Issue 2; ISSN 2643-1564
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (45)

Optical Properties of Fluid Hydrogen at the Transition to a Conducting State journal June 2016
Demonstration of an x-ray Raman spectroscopy setup to study warm dense carbon at the high energy density instrument of European XFEL journal August 2021
Evidence of hydrogen−helium immiscibility at Jupiter-interior conditions journal May 2021
High-precision measurements of the equation of state of hydrocarbons at 1–10 Mbar using laser-driven shock waves journal May 2010
Superconducting Hydrides Under Pressure journal March 2020
Interiors of Giant Planets Inside and Outside the Solar System journal October 1999
Synchrotron infrared spectroscopic evidence of the probable transition to metal hydrogen journal January 2020
Solubility of carbon in sodium journal May 2007
Dissociation of methane under high pressure journal October 2010
Room-temperature superconductivity in a carbonaceous sulfur hydride journal October 2020
Evidence for Crystalline Structure in Dynamically-Compressed Polyethylene up to 200 GPa journal March 2019
Nanodiamond for hydrogen storage: Temperature-dependent hydrogenation and charge-induced dehydrogenation journal January 2012
X-ray scattering measurements of dissociation-induced metallization of dynamically compressed deuterium journal April 2016
Liquid Structure of Shock-Compressed Hydrocarbons at Megabar Pressures journal December 2018
Thermodynamics of a dense plasma journal July 1970
Dynamically pre-compressed hydrocarbons studied by self-impedance mismatch journal March 2020
Diamond formation kinetics in shock-compressed C─H─O samples recorded by small-angle x-ray scattering and x-ray diffraction journal September 2022
Measurement of diamond nucleation rates from hydrocarbons at conditions comparable to the interiors of icy giant planets journal February 2020
Direct observation of an abrupt insulator-to-metal transition in dense liquid deuterium journal June 2015
Nanoscale magnetic sensing with an individual electronic spin in diamond journal October 2008
Insulator-metal transition in dense fluid deuterium journal August 2018
Diamond formation in double-shocked epoxy to 150 GPa journal February 2022
High Pressure Hydrocarbons Revisited: From van der Waals Compounds to Diamond journal May 2019
Superconductivity at 250 K in lanthanum hydride under high pressures journal May 2019
Demonstration of X-ray Thomson scattering as diagnostics for miscibility in warm dense matter journal May 2020
Conceptual Design Report: Dynamic Laser Compression Experiments at the HED Instrument of European XFEL text January 2017
Formation of diamonds in laser-compressed hydrocarbons at planetary interior conditions journal August 2017
The properties of hydrogen and helium under extreme conditions journal November 2012
Plasma phase transition in hydrogen journal March 1985
Conventional superconductivity at 203 kelvin at high pressures in the sulfur hydride system journal August 2015
Observation of the Wigner-Huntington transition to metallic hydrogen journal January 2017
Warm Dense Matter Demonstrating Non-Drude Conductivity from Observations of Nonlinear Plasmon Damping journal May 2017
Metallization of Fluid Molecular Hydrogen at 140 GPa (1.4 Mbar) journal March 1996
High-pressure chemistry of hydrocarbons relevant to planetary interiors and inertial confinement fusion journal May 2018
The phase diagram and transport properties for hydrogen-helium fluid planets journal October 1977
Dissociation of CH4 at High Pressures and Temperatures: Diamond Formation in Giant Planet Interiors? journal October 1999
Polymerization and diamond formation from melting methane and their implications in ice layer of giant planets journal May 2009
Understanding dense hydrogen at planetary conditions journal September 2020
Selective Electrochemical Reduction of Carbon Dioxide to Ethanol on a Boron- and Nitrogen-Co-doped Nanodiamond journal October 2017
Phase Transition in a Strongly Nonideal Deuterium Plasma Generated by Quasi-Isentropical Compression at Megabar Pressures journal October 2007
Carbon precipitation from heavy hydrocarbon fluid in deep planetary interiors journal September 2013
Conductive dense hydrogen journal November 2011
Carbon Nanomaterials for Biological Imaging and Nanomedicinal Therapy journal April 2015
First-principles and classical molecular dynamics simulation of shocked polymers journal February 2010
Carbon Phase Diagram from Ab Initio Molecular Dynamics journal October 2005

Similar Records

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
high-energy density plasmas
high-pressure studies
laboratory studies of space & astrophysical plasmas
materials
shock waves
DFT+DMFT
x-ray diffraction