Browsing ODA Open Digital Archive by Author "Kjellsson, Tor"
Now showing items 1-4 of 4
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Alternative gauge for the description of the light-matter interaction in a relativistic framework
Selstø, Sølve; Kjellsson, Tor; Lindroth, Eva; Simonsen, Aleksander; Førre, Morten (Journal article; Peer reviewed, 2017)We present a generalized velocity gauge form of the relativistic laser-matter interaction. In comparison with the (equivalent) regular minimal coupling description, this form of light-matter interaction results in ... -
Ionization dynamics beyond the dipole approximation induced by the pulse envelope
Simonsen, Aleksander; Kjellsson, Tor; Førre, Morten; Lindroth, Eva; Selstø, Sølve (Peer reviewed; Journal article, 2016-05-16)When atoms and molecules are ionized by laser pulses of finite duration and increasingly high intensities, the validity of the much-used dipole approximation, in which the spatial dependence and magnetic component of the ... -
Relativistic dynamics for hydrogenlike systems
Kjellsson, Tor; Selstø, Sølve; Bræck, Simen; Lindroth, Eva (Peer reviewed; Journal article, 2015)The interaction between super intense laser pulses and hydrogenlike systems is investigated. We aim to study cases where the field drives the electron up to velocities of v~0.5c, where relativistic effects are believed to ... -
Relativistic ionization dynamics for a hydrogen atom exposed to superintense XUV laser pulses
Kjellsson, Tor; Selstø, Sølve; Lindroth, Eva (Journal article; Peer reviewed, 2017)We present a theoretical study of the ionization dynamics of a hydrogen atom exposed to attosecond laser pulses in the extreme ultraviolet region at very high intensities. The pulses are such that the electron is expected ...