The functional form of energyhyphen;differential cross sections for carbon using transmission electron energyhyphen;loss spectroscopy

摘要

Measurements have been made of the functional form of the energyhyphen;differential cross sections for carbon, using transmission electron energyhyphen;loss spectroscopy. It is shown that both the characteristicKedge and the background, prior to theKedge, can be represented accurately by functions of the formAEminus;r, whereEis the energy loss andAandrare constants. The values of the exponent in this expression for theKedge have been compared with calculated values derived from a hydrogenic model and good agreement has been obtained.