New Phases and Dissociation-Recombination of Hydrogen Deuteride to 3.4 Mbar
Abstract
We present infrared absorption studies of solid hydrogen deuteride to pressures as high as 340 GPa (100 GPa =1 Mbar) in a diamond anvil cell and temperatures in the range 5–295 K. Above 198 GPa the HD sample transforms to a mixture of HD, H2, and D2, interpreted as a process of dissociation and recombination. Three new phase lines are observed, two of which differ remarkably from those of the high-pressure homonuclear species, but none are metallic. The time-dependent spectral changes are analyzed to determine the molecular concentrations as a function of time; the nucleon exchange achieves steady state concentrations in ~20 h at ~200 GPa.
- Authors:
-
- Harvard Univ., Cambridge, MA (United States)
- Publication Date:
- Research Org.:
- Harvard Univ., Cambridge, MA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)
- OSTI Identifier:
- 1439437
- Alternate Identifier(s):
- OSTI ID: 1246515; OSTI ID: 1798848
- Grant/Contract Number:
- NA0001990; NA0003346
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 116; Journal Issue: 14; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 08 HYDROGEN; hydrogen deuteride; pressure
Citation Formats
Dias, Ranga P., Noked, Ori, and Silvera, Isaac Franklin. New Phases and Dissociation-Recombination of Hydrogen Deuteride to 3.4 Mbar. United States: N. p., 2016.
Web. doi:10.1103/PhysRevLett.116.145501.
Dias, Ranga P., Noked, Ori, & Silvera, Isaac Franklin. New Phases and Dissociation-Recombination of Hydrogen Deuteride to 3.4 Mbar. United States. https://doi.org/10.1103/PhysRevLett.116.145501
Dias, Ranga P., Noked, Ori, and Silvera, Isaac Franklin. Fri .
"New Phases and Dissociation-Recombination of Hydrogen Deuteride to 3.4 Mbar". United States. https://doi.org/10.1103/PhysRevLett.116.145501. https://www.osti.gov/servlets/purl/1439437.
@article{osti_1439437,
title = {New Phases and Dissociation-Recombination of Hydrogen Deuteride to 3.4 Mbar},
author = {Dias, Ranga P. and Noked, Ori and Silvera, Isaac Franklin},
abstractNote = {We present infrared absorption studies of solid hydrogen deuteride to pressures as high as 340 GPa (100 GPa =1 Mbar) in a diamond anvil cell and temperatures in the range 5–295 K. Above 198 GPa the HD sample transforms to a mixture of HD, H2, and D2, interpreted as a process of dissociation and recombination. Three new phase lines are observed, two of which differ remarkably from those of the high-pressure homonuclear species, but none are metallic. The time-dependent spectral changes are analyzed to determine the molecular concentrations as a function of time; the nucleon exchange achieves steady state concentrations in ~20 h at ~200 GPa.},
doi = {10.1103/PhysRevLett.116.145501},
journal = {Physical Review Letters},
number = 14,
volume = 116,
place = {United States},
year = {Fri Apr 08 00:00:00 EDT 2016},
month = {Fri Apr 08 00:00:00 EDT 2016}
}
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Works referencing / citing this record:
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