X-ray absorption of N2 accompanied by infrared-induced transitions between the ungerade and gerade core levels
2008 (English)In: Journal of Physics B: Atomic, Molecular and Optical Physics, ISSN 0953-4075, E-ISSN 1361-6455, Vol. 41, no 14, 145601- p.Article in journal (Refereed) Published
We study a two-colour pump–probe scheme of x-ray absorption accompanied by core-hole hopping in the field of a strong IR laser. The process is exemplified for fixed-in-space and randomly oriented homonuclear diatomic molecules N2 near the 1σu → 1πg x-ray absorption transition. The laser field mixes the core holes of opposite parities and causes Rabi splitting of the core-excited states. The IR field results in spectral broadening and shifts of the x-ray resonances as well as decrease of x-ray photoabsorption. The Stark broadening of the x-ray absorption spectrum depends on the orientation of the molecule and the angle between the polarization vectors of the x-ray and IR fields. The spectral changes caused by the IR field are weaker for randomly oriented molecules in comparison with fixed-in-space molecules.
Place, publisher, year, edition, pages
2008. Vol. 41, no 14, 145601- p.
Absorption, Electromagnetic wave absorption, Pulsed laser deposition, Pumping (laser), Space probes, X ray absorption, Homonuclear diatomic molecules, IR lasers, Pump probe scheme, X ray absorption (XAS)
IdentifiersURN: urn:nbn:se:kth:diva-9737DOI: 10.1088/0953-4075/41/14/145601ISI: 000257370200021ScopusID: 2-s2.0-47249087705OAI: oai:DiVA.org:kth-9737DiVA: diva2:127317
QC 201009162008-12-042008-12-042016-04-20Bibliographically approved