Massive quartz crystals were studied by using diffractometry, with highly monochromatic γ-rays from a 198Au source that was activated by reactor neutrons. Statistical dynamic diffraction theory was used to calculate the dislocation density from the experimental results. Comparison data for quartz crystals were obtained by determining the dislocation density using γ-ray diffractometry and X-ray topography. A good agreement between the various results showed that diffractometry was a promising method for non-destructive dislocation content control in massive quartz crystals.

I.I.Kalashnikova, V.S.Naumov, A.I.Kurbakov, A.E.Sokolov, S.S.Pashkov: Journal of Crystal Growth, 1997, 177, 57-60