Coincidence electron spectroscopy of electron-impact multiple ionization of argon
- Atomic Physics Laboratory, Department of Physics, Banaras Hindu University, Varanasi-221 005 (India)
Measurements of the partial double differential ionization cross sections of argon atoms have been made by performing coincidences between recoil ions and energy- and angle-selected slow electrons produced in 12-24 keV e{sup -}-Ar collisions. Results show that the Ar{sup 3+} ions are formed mainly by a two-step-one process via electron shake-off. These measurements have enabled determination of the shake-off probability S=0.14{+-}0.01 for L{sub 2,3} subshell, which is in good agreement with a theoretical predication. Additionally, Ar{sup 2+} and Ar{sup +} ions are found to arise respectively from the filling of L-shell vacancy by an auger transition and from the direct ionization of M-shell of the argon atom.
- OSTI ID:
- 20786320
- Journal Information:
- Physical Review. A, Vol. 72, Issue 6; Other Information: DOI: 10.1103/PhysRevA.72.062721; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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