FY2003 LDRD Annual Report Article

[摘要] This study proposes to deliver fundamental experimental data on the melt and phase diagrams of methane in an extended region of high pressures and temperatures. This study targets three major scientific areas: the constraint of planetary models for the outer-giant planets, discovery of exotic phases and insights for many-body intermolecular interactions of non-hard sphere and non-spherical molecules for which no reliable theory exists for these models as yet. In this study, we will adopt in situ at high pressures and temperatures by using both conventional and coherent anti-Stokes Raman spectroscopy applied to laser- or ohmic heated diamond-anvil cells. Structures of methane will be characterized by using intense, third-generation synchrotron x-ray diffraction.

[发布日期] 2003-11-03 [发布机构] Lawrence Livermore National Laboratory

[关键词] Raman Spectroscopy;X-Ray Diffraction;75 Condensed Matter Physics, Superconductivity And Superfluidity;Phase Diagrams;Methane