Optimization of Paris-Edinburgh press cell assemblies for in situ monochromatic X-ray diffraction and X-ray absorption
- Morard, Guillaume
- Mezouar, M.
- Rey, N.
- Poloni, R.
- Merlen, A.
- Le Floch, S.
- Toulemonde, Pierre
- Pascarelli, S.
- San-Miguel, A.
- Sanloup, C.
- Fiquet, G.
DOIAbstract
International audienceWe describe some important improvements allowed by the development of newcell assemblies coupled to opposed conical sintered diamond anvils in the Paris-Edinburgh press.We provide X-ray absorption and diffraction experiments carried out at pressures up to 16.5 GPa. The maximum temperature reached was 1800K forP <10 GPa and 1300K for higher pressures. The sintered diamond anvils are X-ray transparent and give access to a much larger X-ray window than the tungsten carbide anvils, even at the highest pressure. Therefore, X-ray measurements are performed using in situ cross-calibration simultaneously.We also describe a new heating setup used to reach high temperatures, despite the low conductivity of the sintered diamond c...
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