Young's double-slit experiment using two-center core-level photoemission : Photoelectron scattering effects

• Core-level photoemission from N-2 can be considered as an analogue of Young's double-slit experiment (YDSE) in which the double-slit is replaced by a pair of N 1s orbitals. N 1s photoelectron spectra of N-2 are measured in the extended photon energy region up to similar to 1 keV at unprecedented resolution. The measured ratio between the 1 sigma(g) and 1 sigma(u) photoionization cross-sections oscillates as a function of electron momentum due to interference effects analogue to YDSE. We found a shift of the interference pattern with respect to a prediction by a simple model for coherent two-center emission, the Cohen-Fano formula, and attributed it to photoelectron scattering by the neighboring atom. We demonstrate that the shift can be used to determine the scattering phase of the photoelectron.

Ämnesord

NATURVETENSKAP  -- Fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

Nyckelord

core-level photoemission

interference

double-slit experiment

nitrogen molecule

X-ray photoelectron spectroscopy

vibrationally resolved photoionization

photochemistry beamline bl27su

absorption fine-structure

shell photoionization

n-2 molecule

ck-shell

interference

spectroscopy

1-sigma(g)

radiation

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)