Applications of time-dependent configuration-interaction singles for photoelectrons in attosecond and free-electron laser sciences
Bertolino, Mattias LU
(2023)
- Abstract
- This thesis addresses the theoretical treatment of photoelectrons in attosecond and free-electron laser sciences. We
have implemented methods that extract information on the photoionization process, which we use to investigate
interferometric schemes with particular focus on multiphoton ionization and strong-field effects in attosecond
metrology and coherent control of photoelectrons in free-electron laser science.
This thesis comprises six papers.
In Paper I, we investigate photoelectron angular distributions in laser-assisted photoionization. We confirm
earlier predictions of a propensity rule for continuum transitions and discuss interference effects.
In Paper II, we interpret experiments from attosecond and... (More) - This thesis addresses the theoretical treatment of photoelectrons in attosecond and free-electron laser sciences. We
have implemented methods that extract information on the photoionization process, which we use to investigate
interferometric schemes with particular focus on multiphoton ionization and strong-field effects in attosecond
metrology and coherent control of photoelectrons in free-electron laser science.
This thesis comprises six papers.
In Paper I, we investigate photoelectron angular distributions in laser-assisted photoionization. We confirm
earlier predictions of a propensity rule for continuum transitions and discuss interference effects.
In Paper II, we interpret experiments from attosecond and free-electron laser sciences in terms of an interaction
phase and devise a rule of thumb for predicting general phase and amplitude effects in these experiments.
In Paper III, we experimentally determine the one-photon dynamics for each angular momentum channel, as a
function of energy, by studying two-photon photoelectron angular distributions.
In Paper Iv, we experimentally and theoretically investigate periodic population transfer between two bound
states in helium at XUV wavelengths by studying the photoelectron spectra.
In Paper v, we present a general implementation of time-dependent configuration interaction for atomic sys-
tems.
In Paper vI, we discuss size-consistency problems in velocity gauge in truncated configuration spaces and pro-
pose a correction based on the Thomas–Reiche–Kuhn sum rule. We further predict the occurrence of dynamical
interference in laser-assisted photoionization. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/79083345-2217-4f6d-ad5a-68032582e7d9
- author
- Bertolino, Mattias
LU
- supervisor
- opponent
-
- Prof. Palacios, Alicia, Universidad Autónoma de Madrid, Spain.
- organization
- publishing date
- 2023
- type
- Thesis
- publication status
- published
- subject
- keywords
- laser-assisted photoionization, photoelectron interferometry, attosecond physics, free-electron laser, second quantization, time-dependent configuration-interaction singles, surface-flux techniques, Fysicumarkivet A:2023: Bertolino
- pages
- 204 pages
- publisher
- Department of Physics, Lund University
- defense location
- Lecture Hall Rydbergsalen, Department of Physics, Professorsgatan 1, Faculty of Engineering LTH, Lund University, Lund.
- defense date
- 2023-05-26 09:15:00
- ISBN
- 978-91-8039-515-1
- 978-91-8039-514-4
- language
- Swedish
- LU publication?
- yes
- id
- 79083345-2217-4f6d-ad5a-68032582e7d9
- date added to LUP
- 2023-04-27 15:08:42
- date last changed
- 2024-08-27 15:50:24
@phdthesis{79083345-2217-4f6d-ad5a-68032582e7d9,
abstract = {{This thesis addresses the theoretical treatment of photoelectrons in attosecond and free-electron laser sciences. We<br/>have implemented methods that extract information on the photoionization process, which we use to investigate<br/>interferometric schemes with particular focus on multiphoton ionization and strong-field effects in attosecond<br/>metrology and coherent control of photoelectrons in free-electron laser science.<br/>This thesis comprises six papers.<br/>In Paper I, we investigate photoelectron angular distributions in laser-assisted photoionization. We confirm<br/>earlier predictions of a propensity rule for continuum transitions and discuss interference effects.<br/>In Paper II, we interpret experiments from attosecond and free-electron laser sciences in terms of an interaction<br/>phase and devise a rule of thumb for predicting general phase and amplitude effects in these experiments.<br/>In Paper III, we experimentally determine the one-photon dynamics for each angular momentum channel, as a<br/>function of energy, by studying two-photon photoelectron angular distributions.<br/>In Paper Iv, we experimentally and theoretically investigate periodic population transfer between two bound<br/>states in helium at XUV wavelengths by studying the photoelectron spectra.<br/>In Paper v, we present a general implementation of time-dependent configuration interaction for atomic sys-<br/>tems.<br/>In Paper vI, we discuss size-consistency problems in velocity gauge in truncated configuration spaces and pro-<br/>pose a correction based on the Thomas–Reiche–Kuhn sum rule. We further predict the occurrence of dynamical<br/>interference in laser-assisted photoionization.}},
author = {{Bertolino, Mattias}},
isbn = {{978-91-8039-515-1}},
keywords = {{laser-assisted photoionization; photoelectron interferometry; attosecond physics; free-electron laser; second quantization; time-dependent configuration-interaction singles; surface-flux techniques; Fysicumarkivet A:2023: Bertolino}},
language = {{swe}},
publisher = {{Department of Physics, Lund University}},
school = {{Lund University}},
title = {{Applications of time-dependent configuration-interaction singles for photoelectrons in attosecond and free-electron laser sciences}},
url = {{https://lup.lub.lu.se/search/files/145329188/bertolino_phdthesis.pdf}},
year = {{2023}},
}