# Heidelberg 2015 – wissenschaftliches Programm

## Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

# A: Fachverband Atomphysik

## A 7: Poster: Atomic systems in external fields

### A 7.2: Poster

### Montag, 23. März 2015, 17:00–19:00, C/Foyer

**Calculating Tunnel Ionization Time by using a Quantum clock** — •Nicolas Teeny, Heiko Bauke, and Christoph H. Keitel — Max-Planck-Institut für Kernphysik Saupfercheckweg 1, 69117 Heidelberg

Tunnel ionization belongs to the fundamental processes of atomic physics and has been investigated in-depth experimentally as well as theoretically. The question, however, how long it takes for an electron to escape from an attractive potential could not yet be answered conclusively. In our contribution, we solve the time-dependent Schrödinger equation numerically [1], in order to determine time-dependent ionization rates and to extract tunneling times. Additionally, we couple a Salecker-Wigner-Peres quantum clock [2, 3] to the tunneling electron and solve the coupled system numerically to explain the calculated tunneling times.

- =4pt =-2pt [1]
- Proc. of SPIE,
**8780**, 87801Q (2013) - [2]
- Phys. Rev.,
**109**, 571, (1958) - [3]
- Am. J. Phys.,
**48**, 552, (1980)