Peter Lazor
Department of Earth Science, Uppsala University, Sweden
Abstract:
In the
past the technique of white-light interferometry in a diamond anvil cell
proved to represent a reliable tool for measurements of pressure
dependence of the optical dielectric function. We have re-examined the
precision and accuracy of this technique and applied it to
refractive-index studies on H2O and other molecular and simple solids.
We will show that this technique, when combined with fitting
transmission spectra by the Airy function, allows precise measurements
of weak dispersion effects in transparent materials, as well as
determination of distance between diamond anvils at a submicron
resolution. Additionally, application of the interferometry together
with an image analysis of sample facilitated complete monitoring and
control of pressure-volume-temperature conditions of studied H2O ices.
It will be shown that this method represents a promising tool for the
determination of equations of state of optically transparent liquids and
soft solids in a diamond anvil cell.
abstract (pdf)
2008 Run
Nov 19th - Dec 22nd
