Yields of Ions and Excited States in Nonpolar Liquids Exposed to X Rays of 1.4 to 30 keV Energy

摘要

When X rays from a synchrotron source are absorbed in a liquid, the X-ray energy (Ex) is converted by the photoelectric effect into the kinetic energy of the electrons released. For hydrocarbons, absorption by the K electrons of carbon dominates. Thus the energy of the photoelectron (Epe) is Ex ― Eb, where Eb is the K-shell binding energy of carbon. Additional electrons with energy equal to Eb will be released in the Auger process that fills the hole in the K-shell. These energetic electrons will produce many ionisatjons, excitations and products. The consequences of the high density of ionisations and excitations along the track of the photoelectron and special effects near the K edge are examined here.