Breakdown of the independent particle approximation in high-energy photoionization

• The independent particle approximation is shown to break down for the photoionization of both inner and outer nl (l > 0) electrons of all atoms, at high enough energy, owing to interchannel interactions with the nearby ns photoionization channels. The effect is illustrated for Ne 2p in the 1 keV photon energy range through a comparison of theory and experiment. The implications for x-ray photoelectron spectroscopy of molecules and condensed matter are discussed.

Keyword

RANDOM-PHASE APPROXIMATION

ATOMS

NATURAL SCIENCES

NATURVETENSKAP

Publication and Content Type

ref (subject category)

art (subject category)