<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Time Delay in Tunnelling Ionization"^^ . "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."^^ . "2021" . . . . . . . "Daniel"^^ . "Bakucz Canário"^^ . "Daniel Bakucz Canário"^^ . . . . . . "Time Delay in Tunnelling Ionization (PDF)"^^ . . . "thesis_Bakucz_Canario.pdf"^^ . . . "Time Delay in Tunnelling Ionization (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Time Delay in Tunnelling Ionization (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "Time Delay in Tunnelling Ionization (Other)"^^ . . . . . . "small.jpg"^^ . . . "Time Delay in Tunnelling Ionization (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Time Delay in Tunnelling Ionization (Other)"^^ . . . . . . "preview.jpg"^^ . . "HTML Summary of #30143 \n\nTime Delay in Tunnelling Ionization\n\n" . "text/html" . . . "530 Physik"@de . "530 Physics"@en . .