A furnace design for XANES spectroscopy of silicate melts under controlled oxygen fugacities and temperatures to 1773 K
A controlled-atmosphere furnace has been constructed for X-ray absorption spectroscopy experiments under imposed oxygen fugacities at temperatures up to 1773 K. The use of the furnace is demonstrated in a study of the oxidation state of Cr in a basaltic silicate melt (mid-ocean ridge basalt) by K-edge XANES spectroscopy. This is the first time the Cr2+/Cr3+ ratio has been identified directly in an Fe-bearing melt. At typical terrestrial oxygen fugacities around half the Cr is present as Cr2+,...[Show more]
|Collections||ANU Research Publications|
|Source:||Journal of Synchrotron Radiation|
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