We developed a high-temperature oven suitable for X-ray absorption studies that can operate from room temperature up to about 3000 K under high vacuum conditions or possibly controlled atmosphere. The main characteristic of the oven is its simplicity and quick operation. Typical heating and cooling rates can be faster than 100 K/s. This is obtained by heating only a very small graphite crucible inside a glass vessel. The sample size is compatible with typical X-ray beams available and very good temperature homogeneity can be obtained. The oven can be useful to study structural properties of highly anharmonic solids, liquid elements and alloys, as well as to probe the structural effects of temperature-induced chemical reactions. Preliminary measurements on liquid germanium, liquid platinum and molybdenum carbide are presented.

Development of An Oven For X-ray-absorption Measurements Under Extremely High-temperature Conditions

DI CICCO, Andrea
1994

Abstract

We developed a high-temperature oven suitable for X-ray absorption studies that can operate from room temperature up to about 3000 K under high vacuum conditions or possibly controlled atmosphere. The main characteristic of the oven is its simplicity and quick operation. Typical heating and cooling rates can be faster than 100 K/s. This is obtained by heating only a very small graphite crucible inside a glass vessel. The sample size is compatible with typical X-ray beams available and very good temperature homogeneity can be obtained. The oven can be useful to study structural properties of highly anharmonic solids, liquid elements and alloys, as well as to probe the structural effects of temperature-induced chemical reactions. Preliminary measurements on liquid germanium, liquid platinum and molybdenum carbide are presented.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11581/237149
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