Environmental facility for synchrotron radiation topography

Gillespie, K; Littlejohn, A.; Roberts, K. J.; Sheen, D. B. and Sherwood, J. N. (1989). Environmental facility for synchrotron radiation topography. Review of Scientific Instruments, 60(7) pp. 2498–2501.

DOI: https://doi.org/10.1063/1.1140709


A versatile environmental facility for in situ x‐ray topographic (white radiation) investigations of the perfection of nearly perfect single crystals is described. The system is built to UHV standards and can be optimized to investigate the defect structure in many materials at variable pressure and temperature. High quality data have been obtained with this facility during the decomposition of nickel sulphate hexahydrate and calcite. In the former case, in contradiction to what has previously been believed, the results clearly show that dislocations are not involved in the nucleation of the reaction process.

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