High-temperature furnace for dynamic neutron radiography

An easy-to-build and comparatively inexpensive high-temperature graphite tube furnace has been designed, fabricated, and tested for measuring physical properties of silicate melts with dynamic neutron radiography up to temperatures of 2300 K. This furnace allows in situ and real-time observations of large melt volumes at these high temperatures. The furnace has been used for the visualization of the interaction of two chemically distinct melts and for a determination of melt viscosities of silicates with the falling sphere method.