Imaging the He$_2$ quantum halo state using a free electron laser
Atomic Physics
2018-02-08 v2 Nuclear Experiment
Atomic and Molecular Clusters
Chemical Physics
Abstract
We report on coulomb explosion imaging of the wavefunction of the quantum halo system He. Each atom of this system is ionized by tunnelionization in a femto second laser pulse and in a second experiment by single photon ionization employing a free electron laser. We visualize the exponential decay of the probability density of the tunneling particle over distance for over two orders of magnitude up to an internuclear distance of 250 {\AA}. By fitting the slope of the density in the tunneling regime we obtain a binding energy of 151.9 13.3 neV, which is in agreement with most recent calculations.
Cite
@article{arxiv.1601.03247,
title = {Imaging the He$_2$ quantum halo state using a free electron laser},
author = {S. Zeller and M. Kunitski and J. Voigtsberger and A. Kalinin and A. Schottelius and C. Schober and M. Waitz and H. Sann and A. Hartung and T. Bauer and M. Pitzer and F. Trinter and C. Goihl and C. Janke and M. Richter and G. Kastirke and M. Weller and A. Czasch and M. Kitzler and M. Braune and R. E. Grisenti and W. Schöllkopf and L. Ph. H. Schmidt and M. Schöffer and J. B. Williams and T. Jahnke and R. Dörner},
journal= {arXiv preprint arXiv:1601.03247},
year = {2018}
}
Comments
11 pages, 5 figures