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Showing result 1 - 5 of 50 swedish dissertations matching the above criteria.

  2. 1. Quantum interference effects in attosecond photoionization dynamics

    Author : David Busto; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Attosecond; Photoionization; Interferometry;

    Abstract : The interaction of extreme ultraviolet light with matter can lead to the emission of an electron in a process known as photoionization. The electron wavepacket (EWP) created in the continuum propagates on the ionic potential, resulting in a delay compared to an EWP propagating freely. READ MORE

  4. 2. Ultrafast Photoionization Dynamics Studied with Coincidence Momentum Imaging Spectrometers

    Author : Yu-Chen Cheng; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Photoionization; High-order Harmonic Generation; Extreme Ultraviolet; Free-Electron Laser; Molecular Dissociation; Charge Transfer; Coincidence Measurement; Momentum Imaging; Electron Wave Packet; Fysicumarkivet A:2019:Cheng;

    Abstract : The time scale of the dynamics in atoms and molecules varies from attoseconds (10-18) to picoseconds (10-12) depending on the size of the particles. To study such dynamics, ultrafast light pulses are needed to trigger and capture the reaction. One of the most direct methods consists in ionizing the system and observing the following response. READ MORE

  5. 3. Studies of molecular photoionization

    Author : Alejandro Palma Almendra; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : .... READ MORE

  6. 4. Attosecond photoelectron interferometry: from wavepackets to density matrices

    Author : Hugo Laurell; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Quantum state tomography; Decoherence; Photoionization; Fysicumarkivet A:2023:Laurell;

    Abstract : Through the advent of high-order harmonic generation and attosecond light pulses, photoionization dynamics has been studied on the attosecond time-scale, the intrinsic time-scale of such dynamics. When the electron leaves the atomic potential a phase shift is imprinted on the electron wavefunction. READ MORE

  7. 5. Short Attosecond Pulse Trains at High Repetition Rates for Novel Pump-Probe and Coincidence Studies

    Author : Sara Mikaelsson; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Attosecond; High-Order Harmonic Generation; Photoionization; Attosecond; High-Order Harmonic Generation; Photoionization; Fysicumarkivet A:2021:Mikaelsson;

    Abstract : This work aims at studying photoionization dynamics from atoms and surfaces at attose time scales. The work was based on development and applications of a high repetition rate High-order Harmonic Generation (HHG) light source that utilizes Optical Parametric Amplification (OPA) laser technology. READ MORE