Comparing ruby fluorescence spectra at high pressure in between methanol-ethanol pressure transmitting medium and its deuteride

Abstract

Ruby fluorescence spectra were statistically compared in between a 4:1 methanol-ethanol and its deuterated mixture under high pressure in the DAC. It was confirmed that the isotope substitution in the pressure transmitting media results in no distinctive difference in the peak shape and pressure shift of the R1 and R2 lines in the ruby fluorescence spectra up to around 25 GPa. These results suggest that the pressure-induced solidification/glass transition between these hydrogenated and deuterated liquids has no isotopic effect within experimental uncertainties. © 2010 IOP Publishing Ltd.