eprintid: 30143
rev_number: 16
eprint_status: archive
userid: 5978
dir: disk0/00/03/01/43
datestamp: 2021-07-02 08:27:33
lastmod: 2021-07-27 07:44:09
status_changed: 2021-07-02 08:27:33
type: doctoralThesis
metadata_visibility: show
creators_name: Bakucz Canário, Daniel
title: Time Delay in Tunnelling Ionization
subjects: ddc-530
divisions: i-130001
adv_faculty: af-13
abstract: A promising new method of attosecond spectroscopy, the attoclock, offers attosecond resolution without requiring attosecond laser pulses. However, it requires knowledge of the ionization time, opening up a long standing conceptual problem in physics (“how much time does tunnelling take?”). In this work, the time delay in the tunnel ionization process is considered. It is shown that a delay of the peak of the tunnelling wavefunction exists as a matter of principle, and is caused by the interference of transmitted and reflected components of the wavefunction. If sub-barrier reflections are neglected from the wavefunction, the delay in the peak vanishes and tunnelling is seen to be instantaneous. This is shown by considering a series of models of increasing complexity: the square barrier, an adiabatically tunnelling electron, and a wavefunction based on the Strong Field Approximation. This work has implications on the interpretation of attoclock experiments: treatments based on instantaneous tunnelling should be adjusted in order to achieve appropriate calibration of the attoclock.
date: 2021
id_scheme: DOI
id_number: 10.11588/heidok.00030143
ppn_swb: 1764613201
own_urn: urn:nbn:de:bsz:16-heidok-301439
date_accepted: 2021-06-16
advisor: HASH(0x55a9a65b1020)
language: eng
bibsort: BAKUCZCANATIMEDELAYI2021
full_text_status: public
place_of_pub: Heidelberg
citation:   Bakucz Canário, Daniel  (2021) Time Delay in Tunnelling Ionization.  [Dissertation]     
document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/30143/7/thesis_Bakucz_Canario.pdf