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

• Core-level photoemission from N-2 can be considered an analogue of Young's double-slit experiment (YDSE) in which the double-slit is replaced by a pair of N 1s orbitals. The measured ratio between the 1 sigma(g) and 1 sigma(u) photoionization cross-sections oscillates as a function of photoelectron momentum, due to two-center YDSE interference, exhibiting a remarkable dependence on the vibrational sub-levels of the core ionized state. We theoretically demonstrate that the recoil of the photoelectron given to the ionized N atom strongly influences this interference pattern. The reason for this is that the momentum transfer affects the phases of the photoionization amplitudes.

Subject headings

NATURVETENSKAP  -- Fysik (hsv//swe)

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

Keyword

Young's double-slit

recoil

nitrogen

X-ray photoelectron

vibrationally resolved photoionization

absorption fine-structure

n-2 molecule

interference

spectroscopy

1-sigma(g)

resonance

Publication and Content Type

ref (subject category)

art (subject category)