Electron induced degradation of condensed Fe(CO)5 studied by electron stimulated desorption

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

Massey, Sylvain^1 ; Bass, Andrew D.^1 ; Alizadeh, Elahe^2 ; Sanche, Leon^1

Département de Médecine Nucléaire et Radiobiologie, Université de Sherbrooke, Sherbrooke

QC

J1H 5N4, Canada^1

Department of Chemistry and Biochemistry, University of Guelph, Guelph

ON

N1G 2W1, Canada^2

关键词: Cationic fragments;    Dissociative electron attachment;    Dissociative ionization;    Electron stimulated desorption;    Incident electrons;    Induced degradation;    Threshold energy;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/6/062012/pdf
DOI  :  10.1088/1742-6596/635/6/062012

来源: IOP

【 摘 要 】

We have measured the electron stimulated desorption (ESD) yields of anions and cations from thin films of Fe(CO)5deposited onto both Xe or Pt surfaces. Measurements were made as functions of incident electron energy, incident current, and the thickness of both the Fe(CO)5and Xe layers. The desorption of C-and O-occur exclusively via dipolar dissociation (DD), while the desorption of Fe(CO)x-(x = 0-4) proceeds via DD and dissociative electron attachment (DEA). Threshold energies for the desorption of cationic fragments C+, O+, CO+, and Fe(CO)+x(x = 0-4) were measured. Only CO+appears to be produced by DD as opposed to dissociative ionization.