noun. An electron released or ejected from a substance by the photoelectric effect.

noun. An electron ejected from the surface of a material by the photoelectric effect

noun. an electron that is emitted from an atom or molecule by an incident photon

"Castleman and his team -- which includes Samuel Peppernick, a former Penn State graduate student who now is a postdoctoral researcher at the Pacific Northwest National Laboratory, and Dasitha Gunaratne, a Penn State graduate student -- used a technique, called photoelectron imaging spectroscopy, to examine similarities between titanium monoxide and nickel, zirconium monoxide and palladium, and tungsten carbide and platinum."

electron  negatron  

absorptiometry  aromaticity  backscatter  bond-equivalent  dft-based