Speaker
Dr
Jeremy Wykes
(Macquarie University)
Description
The Macquarie University-Australian Synchrotron D-DIA apparatus is a large-volume solid-media apparatus for high pressure, high temperature in-situ x-ray experiments. The apparatus can subject a sample volume of up to 5 mm^3 to pressures to 6 GPa and temperatures to 1500 °C.
During 2016/2 initial experiments were conducted on the XAS beamline. Uranium and Thorium L3-edge transmission XANES spectra were successfully collected from silicate liquid at ~2 GPa, 1350 °C. Further tests with the sample assembly under ambient conditions indicate the lowest energy edge accessible in the apparatus with the present sample assembly is Ge K (11.1 keV).
XAS was run in mirrorless mode at 38 keV for a proof-of-concept falling-sphere viscometry experiment. Soda-lime glass was rapidly melted by heating from ~800 °C to ~1400 °C at ~2 GPa, and a falling platinum sphere was imaged with a CCD via YAG-mirror-lens setup.
Prospects for future applications of the D-DIA apparatus at the Australian Synchrotron will be discussed.
| Are you a student? | No |
|---|---|
| Are you an ECR? (<5 yrs</br>since PhD/Masters) | Yes |
| Do you wish to take part in</br>the Student Poster Slam? | No |
| What is your gender? | Male |
Primary author
Dr
Jeremy Wykes
(Macquarie University)
Co-authors
Mr
Christopher Cline
(Australian National University)
Dr
Guil Mallmann
(Australian National University)
Dr
Simon Clark
(Macquarie University)
Dr
Simon Turner
(Macquarie University)
Dr
Tracy Rushmer
(Macquarie University)
