An Experimental Investigation Of The Dissociative Ionization Process Of Argon Cluster Ions Induced By Electron Impact

Utilizing the Cold Target Recoil Ions Momentum Spectrometer (COLTRIMS), dissociative ionization of argon cluster was experimentally investigated by electron impact. The recoil ions produced both in the pure ionization process and the dissociative ionization channels are measured with collision energies from 100 and 1000 eV. The ratios of the dimer ions from pure ionization (Ar-2.P(+)) and the dimer ions from small cluster dissociation (Ar-2.D(+)) to the atomic argon ion (Ar+) in different stagnation pressures were obtained.