Abstract
SynopsisPhotoionization microscopy (PM) aims at imaging the flux of slow (meV) electrons released by atomic photoionization in the presence of a static electric field. We discuss the rotation of the linear light polari-zation with respect to the electric field direction. Two-photon ionization out of an m=0 initial state allows for the population of |m|=0,1,2 Stark states. The resulting |m|-beating effects in the PM images are demonstrated theoretically (in hydrogen atom) and experimentally (in Mg atom). Implications on the applicability of tomographic techniques for slow electrons are also discussed.
Highlights
Synopsis Photoionization microscopy (PM) aims at imaging the flux of slow electrons released by atomic photoionization in the presence of a static electric field
The low energy of the outgoing electrons and the high spatial resolution of PM allows for the observation of the radial quantum interference patterns exhibited by j
For simplifying the analysis of these patterns PM experiments were so far restricted to the excitation of final Stark states of a single magnetic quantum number |m|
Summary
Synopsis Photoionization microscopy (PM) aims at imaging the flux of slow (meV) electrons released by atomic photoionization in the presence of a static electric field. P Kalaitzis1 *, S Danakas1, F Lépine2, C Bordas2 and S Cohen1 † We discuss the rotation of the linear light polarization with respect to the electric field direction.
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