Work

Ab initio Auger spectrum of the ultrafast dissociating 2p 3/2 −1 σ* resonance in HCl

Year: 2024

Type: article

Abstract: σ* resonance in HCl, where the electronic Auger decay and nuclear dissociation occur on the same time scale. The Auger decay rates are calculated within the one-center approximation and are shown to vary significantly with the inter-nuclear distance. A quantum-mechanical description of dissociation is effectuated by propagating the corresponding Franck-Condon factors. The calculated profiles of Auger spectral lines resemble those of atomic Auger decay but here the characteristic tails extend towards lower electron kinetic energies, which reflect specific features of the potential energy curves. The presented method can describe the resonant Auger spectrum for an arbitrary speed of dissociation and simplifies to known approximations in the limiting cases.

Source: Physical Chemistry Chemical Physics

DOI: 10.1039/d4cp03727h

Authors: Mateja Hrast, Marko Ljubotina, Matjaž Žitnik

Institutions: Institute of Science and Technology Austria, Jožef Stefan Institute, Jožef Stefan International Postgraduate School, University of Ljubljana

Language: English

Topic: Atomic and Molecular Physics

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: European Cooperation in Science and Technology, Javna Agencija za Raziskovalno Dejavnost RS, European Research Council, H2020 European Research Council

Awards: Studies of atoms, molecules and structures by photons and particles, G7117045094, Angulon: physics and applications of a new quasiparticle, G8023491440