Single- and Double-Deformation Faults in Face-Centered Cubic Crystals

Abstract

The diffraction effects of a double‐deformation fault (extrinsic fault) are readily derived for small faulting probabilities by using a faulted sequence with a layer added and subtracted. Let α′ and α″ be the probabilities for single‐ and double‐deformation faults. If both types of faulting are present, with α′ and α″ both small and independent, the peak broadening depends upon α′+α″, the peak shift depends upon α′−α″, and there is a peak asymmetry proportional to α″ which is similar to that produced by twin faulting.