APPLICATION OF DYNAMIC NEUTRON IMAGING IN THE EARTH SCIENCES TO DETERMINE VISCOSITIES AND DENSITIES OF SILICATE MELTS
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Abstract
Abstract The use of dynamic neutron imaging in combination with the falling sphere technique to measure viscosities and densities of silicate melts at high temperatures and moderate pressures is explored. The experimental set up of this technique at the neutron radiography facility of the Orphe reactor in Saclay (France) is described. First falling sphere experiments with a melt of diopside (CaMgSi206) composition show that it is possible to determine viscosities and densities with this technique. Absorption measurements of a bulk rock show that the contrast between different mineral species is sufficient for their detection, This allows the observation of processes like partial melting, melt segregation and mixing in inhomogeneous melts, which can be monitored in real time through a video system.
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Research context
OpenAlex topics: Nuclear Physics and Applications · High-pressure geophysics and materials · Geological and Geochemical Analysis
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