Photostimulated exoelectron emission from slip lines: A new microscopy of metal deformation

Abstract

In this paper we show that photostimulated exoelectron emission resulting from the plastic deformation of a metal originates solely from the slip lines produced on the surface. Conclusive evidence is provided by micrographs formed by direct electron optical imaging of the exoelectrons. The exoelectrons are emitted only from bare metal revealed by a localized rupturing of the natural surface oxide during the formation of the slip step. This contrast mechanism is unique and offers a new form of electron microscopy for the study of plastic deformation of metals.