An (e, 2e + ion) study of low-energy electron-impact ionization and fragmentation of carbon dioxide

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

Wang, Xing^1,2 ; Ren, Xueguang^1,3 ; Dorn, Alexander^1

Max-Planck-Institute for Nuclear Physics, Heidelberg

69117, Germany^1

School of Science, Xi'An Jiaotong University, Xi'an

710049, China^2

Physikalisch-Technische Bundesanstalt, Braunschweig

38116, Germany^3

关键词: Binding energy spectra;    Electron impact;    Energy resolutions;    Fragmentation pathways;    Ion kinetic energy;    Low-energy electron-impact ionization;    Momentum vectors;    Reaction microscopes;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/7/072022/pdf
DOI  :  10.1088/1742-6596/635/7/072022

来源: IOP

【 摘 要 】

We study the ionization and fragmentation of carbon dioxide (CO2) induced by low-energy (E0= 66 eV) electron-impact using a reaction microscope. The momentum vectors of all three charged final state particles, two outgoing electrons and one fragment ion, are detected with an (e, 2e + ion) triple coincidence method. The fragmentation pathways of carbon dioxide for formation of the CO+2, CO+, O+and C+ions are investigated by measuring the ion kinetic energy spectra and the binding energy spectra where a binding energy resolution of 2.0 eV has been achieved in the experiment.