New Phases and Dissociation-Recombination of Hydrogen Deuteride to 3.4 Mbar
Journal Article
·
· Physical Review Letters
- Harvard Univ., Cambridge, MA (United States)
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
Cited by: 22 works
Citation information provided by
Web of Science
Web of Science
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