| タイトル | Synchrotron infrared spectroscopy at megabar pressures - Vibrational dynamics of hydrogen to 180 GPa |
| 著者（英） | Hemley, R. J.; Mao, H. K.; Hanfland, M.; Williams, G. P. |
| 著者所属（英） | NASA Headquarters |
| 発行日 | 1992-08-17 |
| 言語 | eng |
| 内容記述 | New techniques for measuring infrared spectra at megabar pressures using synchrotron radiation have been developed and applied to study the Q1(1), Qi(1) + Si(0), and QR(J) vibrational transitions of solid hydrogen to 180 GPa. The frequency difference between the Q1(1) infrared and Raman vibrons increases from 3/cm (zero pressure) to 510/cm (180 GPa), indicating a dramatic increase in intermolecular coupling with pressure. A negative frequency shift is observed for the infrared vibron above 140 GPa. A significant increase in frequency and LO-TO splitting of the lattice phonon is also documented. |
| NASA分類 | INORGANIC AND PHYSICAL CHEMISTRY |
| レポートNO | 92A52625 |
| 権利 | Copyright |
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