Dokument: High intensity laser-plasma interactions and their potential for exploring strong-field QED
| Titel: | High intensity laser-plasma interactions and their potential for exploring strong-field QED | |||||||
| URL für Lesezeichen: | https://docserv.uni-duesseldorf.de/servlets/DocumentServlet?id=53678 | |||||||
| URN (NBN): | urn:nbn:de:hbz:061-20200708-113755-3 | |||||||
| Kollektion: | Dissertationen | |||||||
| Sprache: | Englisch | |||||||
| Dokumententyp: | Wissenschaftliche Abschlussarbeiten » Dissertation | |||||||
| Medientyp: | Text | |||||||
| Autor: | Baumann, Christoph [Autor] | |||||||
| Dateien: |
| |||||||
| Beitragende: | Prof. Dr. Pukhov, Alexander [Gutachter] Prof. Dr. Dr. Müller, Carsten [Gutachter] | |||||||
| Dewey Dezimal-Klassifikation: | 500 Naturwissenschaften und Mathematik » 530 Physik | |||||||
| Beschreibung: | The upcoming generation of laser facilities promises extraordinarily strong electromagnetic fields and so opens the door to completely new regimes of light-matter interaction. Special attention is paid on that front to systematic studies on strong-field quantum electrodynamics (QED), where the emergence of a series of novel effects is predicted. Currently, a lot of effort is therefore put into the design of promising experimental campaigns that might be realized in the near future. Plasma, a collective mixture of unbound charges, has gained broad interest in that context, as it offers various opportunities.
The first part of this thesis comprises so-called QED plasmas where one is interested in the coupling between collective plasma behavior and QED effects. In particular, the normal radiative-trapping effect is investigated. This effect describes the trapping of radiatively cooled electrons in the nodes of the superimposed electric field transiently formed by two counter-propagating laser pulses. The trapping is subsequently shown to break in sufficiently strong fields due to collective behavior of the generated electron-positron plasma. In a further step, the investigations are generalized to the case of circularly polarized twisted light. It is emphasized that the nodes in such configurations form helically-shaped patterns along which electrons can be radiatively trapped. Simultaneously, circularly polarized twisted light is found to enable the laser-driven generation of structured ultra-short (several hundred attoseconds) electron bunches. The second part of the thesis addresses the conjectured breakdown of perturbative strong-field QED under most extreme conditions. This high-intensity frontier is generally assumed to be far beyond experimental reach due to the ultra-fast radiation loss time of electrons. The thesis is devoted to proving the assumption false by proposing configurations that might allow reaching the fully non-perturbative regime with 100 GeV-class electrons. Three promising setups are introduced in total. These include the collision with a nanometer-sized Mega-Ampere electron beam; an ultra-intense electromagnetic attosecond pulse generated through laser-plasma interaction; and an optical laser pulse whose leading front is cut in the ultra-thin skin layer of a solid-dense plasma. Finally, ways how to identify and differentiate the impact of non-perturbative QED effects from experimentally measured particle spectra are considered. | |||||||
| Lizenz: |  Urheberrechtsschutz | |||||||
| Fachbereich / Einrichtung: | Mathematisch- Naturwissenschaftliche Fakultät » WE Physik » Theoretische Physik | |||||||
| Dokument erstellt am: | 08.07.2020 | |||||||
| Dateien geändert am: | 08.07.2020 | |||||||
| Promotionsantrag am: | 17.03.2020 | |||||||
| Datum der Promotion: | 08.06.2020 |
