Experimental evidence for two decay channels in electron impact ionization and fragmentation of argon dimer

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

Al Maalouf, Elias Jabbour^1 ; Ren, Xueguang^2,3 ; Dorn, Alexander^2 ; Denifl, Stephan^1

Institute for Ion and Applied Physics, University of Innsbruck, Technikerstrasse 25, Innsbruck

6020, Austria^1

Max-Planck-Institut für Kernphysik, Heidelberg

69117, Germany^2

Physikalisch-Technische Bundesanstalt, Braunschweig

38116, Germany^3

关键词: Dissociative ionization;    Double peak structure;    Electron impact;    Electron impact-ionization;    Experimental evidence;    Kinetic energy release;    Multiple particles;    Reaction microscopes;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/7/072062/pdf
DOI  :  10.1088/1742-6596/635/7/072062

来源: IOP

【 摘 要 】

We study the dissociative ionization of Ar dimer (Ar2) by electron impact with the multiple particles coincidence (electrons and ions) method using a reaction microscope. From the measured kinetic energies of final state electrons and ions, we identify two decay channels which can contribute to the double peak structure in the observed kinetic energy release (KER) spectrum of argon Ar2dissociating into Ar+- Ar+.