skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: New Phases and Dissociation-Recombination of Hydrogen Deuteride to 3.4 Mbar

Journal Article · · Physical Review Letters

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.

Research Organization:
Harvard Univ., Cambridge, MA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)
Grant/Contract Number:
NA0001990; NA0003346
OSTI ID:
1439437
Alternate ID(s):
OSTI ID: 1246515; OSTI ID: 1798848
Journal Information:
Physical Review Letters, Vol. 116, Issue 14; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 22 works
Citation information provided by
Web of Science

References (38)

Phonon Localization by Mass Disorder in Dense Hydrogen-Deuterium Binary Alloy journal October 2014
An old disk still capable of forming a planetary system journal January 2013
Synchrotron Infrared Measurements of Dense Hydrogen to 360 GPa journal April 2012
Quantum Monte Carlo study of the phase diagram of solid molecular hydrogen at extreme pressures journal July 2015
New Low-Temperature Phase of Molecular Deuterium at Ultrahigh Pressure journal July 1981
High-Pressure Measurements of Hydrogen Phase IV Using Synchrotron Infrared Spectroscopy journal May 2013
Structure of phase III of solid hydrogen journal May 2007
Pressure dependence of the vibron in H 2 , HD, and D 2 : Implications for inter- and intramolecular forces journal November 1993
Solid hydrogen at 342 GPa: no evidence for an alkali metal journal May 1998
Identification of high-pressure phases III and IV in hydrogen: Simulating Raman spectra using molecular dynamics journal May 2013
A high deuterium abundance at redshift z = 0.7 journal July 1997
S p i t zer Observations of Hydrogen Deuteride journal July 2006
Density functional theory study of phase IV of solid hydrogen journal June 2012
The ruby pressure standard to 150GPa journal December 2005
Megabar-Pressure Infrared Study of Hydrogen Deuteride journal December 2006
Mixed Molecular and Atomic Phase of Dense Hydrogen journal March 2012
Electric Dipole Moment of HD journal April 1968
Megabar pressure triple point in solid deuterium journal May 1994
Optical studies of solid hydrogen to 320 GPa and evidence for black hydrogen journal April 2002
Diamond anvil cell and cryostat for low‐temperature optical studies journal January 1985
Direct observation of an abrupt insulator-to-metal transition in dense liquid deuterium journal June 2015
Robust Diffusive Proton Motions in Phase IV of Solid Hydrogen journal May 2014
Hydrogen (deuterium) vibron frequency as a pressure comparison gauge at multi-Mbar pressures journal August 2013
Vibrational Raman spectra of hydrogen and deuterium mixtures at high pressures journal May 1992
Remarkable high pressure phase line of orientational order in solid hydrogen deuteride journal December 1993
Kinetics of Phase Change. II Transformation‐Time Relations for Random Distribution of Nuclei journal February 1940
Granulation, Phase Change, and Microstructure Kinetics of Phase Change. III journal February 1941
Proton tunneling in phase IV of hydrogen and deuterium journal December 2012
On the Possibility of a Metallic Modification of Hydrogen journal December 1935
Kinetics of Phase Change. I General Theory journal December 1939
H 2 O and D 2 mixtures under pressure: Spectroscopy and proton exchange kinetics journal November 2011
Hydrogen phase IV revisited via synchrotron infrared measurements in H 2 and D 2 up to 290 GPa at 296 K journal April 2013
Raman shift of stressed diamond anvils: Pressure calibration and culet geometry dependence journal August 2008
Conductive dense hydrogen journal November 2011
Quantum simulation of low-temperature metallic liquid hydrogen journal June 2013
Density functional theory study of phase IV of solid hydrogen text January 2012
Quantum simulation of low-temperature metallic liquid hydrogen text January 2012
Robust Diffusive Proton Motions in Phase IV of Solid Hydrogen preprint January 2013

Cited By (8)

The role of van der Waals and exchange interactions in high-pressure solid hydrogen journal January 2017
Commensurate-incommensurate phase transition of dense potassium simulated by machine-learned interatomic potential journal December 2019
Nature of the metallization transition in solid hydrogen journal January 2017
Quantum molecular dynamics study on the proton exchange, ionic structures, and transport properties of warm dense hydrogen-deuterium mixtures journal June 2018
Phase Diagram of Dense H 2 He Mixtures: Evidence for Strong Chemical Association, Miscibility, and Structural Change journal April 2018
Infrared Peak-Splitting from phonon localization in Solid Hydrogen text January 2016
A simple thermodynamic model for the hydrogen phase diagram text January 2017
The role of van der Waals and exchange interactions in high-pressure solid hydrogen text January 2017

Similar Records

High-Pressure Hydrogen Interactions with Polyaminoborane and Polyiminoborane
Journal Article · Mon Jan 18 00:00:00 EST 2010 · Chemphyschem, 11(1):93-96 · OSTI ID:1439437

Pressure dissociation of solid nitrogen under 1 Mbar
Journal Article · Mon Apr 29 00:00:00 EDT 1985 · Phys. Rev. Lett.; (United States) · OSTI ID:1439437

Opposed type double stage cell for Mbar pressure experiment with large sample volume
Journal Article · Wed Jan 08 00:00:00 EST 2020 · High Pressure Research · OSTI ID:1439437