Photo-induced ultrafast dissociation following deep-core-electron excitation

29th International Conference on Photonic, Electronic, and Atomic Collisions

Travnikova, Oksana^1,2 ; Marchenko, Tatiana^1,2 ; Goldsztejn, Gildas^1,2 ; Guillemin, Renaud^1,2 ; Journel, Loïc^1,2 ; Céolin, Denis^5 ; Jänkälä, Kari^3 ; Püttner, Ralph^4 ; Iwayama, Hiroshi^7 ; Shigemasa, Eiji^7 ; Carniato, Stéphane^1,2 ; Piancastelli, Maria Novella^1,2,6 ; Simon, Marc^1,2,5

CNRS, UMR 7614, Laboratoire de Chimie Physique-Matiére et Rayonnement, Paris

F-75005, France^1

Sorbonne Universités, UPMC Univ Paris 06, UMR 7614, Laboratoire de Chimie Physique-Matiére et Rayonnement, Paris

F-75005, France^2

Department of Physics, University of Oulu, P. O. Box 3000, Oulu

90014, Finland^3

Institut für Experimentalphysik, Freie Universität Berlin, Berlin

D-14195, Germany^4

Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette Cedex

F-91192, France^5

Department of Physics and Astronomy, Uppsala University, Uppsala

SE-75120, Sweden^6

Ultraviolet Synchrotron Orbital Radiation Facility, Institute for Molecular Science, Okazaki

444-8585, Japan^7

关键词: Auger decays;    Core electron excitations;    Intermediate state;    Multiple holes;    Nonradiative decays;    Nuclear dynamics;    Photo-induced;    Ultrafast dissociation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/11/112024/pdf
DOI  :  10.1088/1742-6596/635/11/112024

来源: IOP

【 摘 要 】

Creation of deep core holes leads to extensive nuclear dynamics on a few femtosecond timescale despite the very short (τ ≤ 1 fs) lifetime of such states. This is because the 1ststeps of the relaxation processes (i.e. both radiative and non-radiative decays) generate intermediate states with one and multiple holes in core orbitals. As an example, ultrafast dissociation is observed in three well-distinguishable LVV Auger decay channels for HCl following Cl1s→σ∗excitation.