New Phases and Dissociation-Recombination of Hydrogen Deuteride to 3.4 Mbar
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, H_{2}, and D_{2}, interpreted as a process of dissociation a...
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| Veröffentlicht in: | Physical review letters 2016-04, Vol.116 (14), p.145501-145501, Article 145501 |
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| container_title | Physical review letters |
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| creator | Dias, Ranga P Noked, Ori Silvera, Isaac F |
| description | 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, H_{2}, and D_{2}, 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_str_mv | 10.1103/PhysRevLett.116.145501 |
| format | Article |
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| issn | 0031-9007 1079-7114 |
| language | eng |
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| source | American Physical Society Journals |
| subjects | Deuterides Diamond anvil cells Infrared absorption Nucleons Phases Spectra Steady state Time dependence |
| title | New Phases and Dissociation-Recombination of Hydrogen Deuteride to 3.4 Mbar |
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