Photoelectron spectroscopy of laser-dressed atomic helium
Atomic Physics
2021-01-04 v1
Abstract
Photoelectron emission from excited states of laser-dressed atomic helium is analyzed with respect to laser intensity-dependent excitation energy shifts and angular distributions. In the two-color XUV (exteme ultra\-violet) -- IR (infrared) measurement, the XUV photon energy is scanned between \SI{20.4}{\electronvolt} and the ionization threshold at \SI{24.6}{\electronvolt}, revealing electric dipole-forbidden transitions for a temporally overlapping IR pulse (). The interpretation of the experimental results is supported by numerically solving the time-dependent Schr\"odinger equation in a single-active-electron approximation.
Keywords
Cite
@article{arxiv.2009.06480,
title = {Photoelectron spectroscopy of laser-dressed atomic helium},
author = {Severin Meister and Aaron Bondy and Kirsten Schnorr and Sven Augustin and Hannes Lindenblatt and Florian Trost and Xinhua Xie and Markus Braune and Rolf Treusch and Nicolas Douguet and Thomas Pfeifer and Klaus Bartschat and Robert Moshammer},
journal= {arXiv preprint arXiv:2009.06480},
year = {2021}
}
Comments
6 pages, 5 figures