Ionization of Kr.CF4 and Xe.CF4 van der Waals clusters: from face to vertex geometry

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

Püttner, R.^1 ; Alekseev, V.A.^2 ; Garcia, G.A.^3 ; Kevorkyants, R.^2 ; Nahon, L.^3

Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195, Germany^1

Institute of Physics, St.Petersburg State University, Uljanovskaja St.1, Peterhof

198504, Russia^2

Synchrotron Soleil, Orme des Merisiers, St. Aubin BP 48, Gif sur Yvette Cedex

91192, France^3

关键词: Ab initio calculations;    Equilibrium configuration;    Photoelectron spectrum;    Photoelectron-photoion coincidence;    Supersonic expansions;    Van der waals;    Van der Waals clusters;    Vertex geometry;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/11/112056/pdf
DOI  :  10.1088/1742-6596/635/11/112056

来源: IOP

【 摘 要 】

We report on photoionization studies of Xe.CF4and Kr.CF4van-der-Waals (vdW) clusters produced in a supersonic expansion and detected using synchrotron radiation and photoelectron- photoion coincidence techniques. Complementary ab initio calculations of the potential energy surfaces for the ground state and the first ionized state are performed and show generally good agreement with the experimental results. In particular, the calculation reveals a change in the equilibrium configuration from face to vertex geometry upon ionization. This observation is fully in line with the lineshapes of the Xe.CF4and Kr.CF4clusters in the photoelectron spectra.