TY  - JOUR
A1  - Trabert, Daniel
A1  - Brennecke, Simon
A1  - Fehre, Kilian
A1  - Anders, Nils
A1  - Geyer, Angelina
A1  - Grundmann, Sven Eric
A1  - Schöffler, Markus S.
A1  - Schmidt, Lothar
A1  - Jahnke, Till
A1  - Dörner, Reinhard
A1  - Kunitski, Maksim
A1  - Eckart, Sebastian Gereon
T1  - Angular dependence of the Wigner time delay upon tunnel ionization of H2
T2  - Nature Communications
N2  - When a very strong light field is applied to a molecule an electron can be ejected by tunneling. In order to quantify the time-resolved dynamics of this ionization process, the concept of the Wigner time delay can be used. The properties of this process can depend on the tunneling direction relative to the molecular axis. Here, we show experimental and theoretical data on the Wigner time delay for tunnel ionization of H2 molecules and demonstrate its dependence on the emission direction of the electron with respect to the molecular axis. We find, that the observed changes in the Wigner time delay can be quantitatively explained by elongated/shortened travel paths of the emitted electrons, which occur due to spatial shifts of the electrons’ birth positions after tunneling. Our work provides therefore an intuitive perspective towards the Wigner time delay in strong-field ionization.
KW  - Atomic and molecular interactions with photons
KW  - Attosecond science
Y1  - 2021
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/63647
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-636472
SN  - 2041-1723
N1  - This work was funded by the German Research Foundation (DFG) through priority programme SPP 1840 QUTIF.
Open Access funding enabled and organized by Projekt DEAL.
VL  - 12.2021
SP  - 1
EP  - 10
PB  - Nature Publishing Group UK
CY  - [London]
ER  -