Doubly and Triply Differential Ionization Studies using Positrons and Electrons
Methods and results from experimental studies of single and multiple ionization of atoms induced by positron and electron impact are discussed. Coincidences between recoil ions, forward scattered projectiles and electrons ejected into a cone of angles are measured. From these data, doubly and triply differential cross-sections are extracted. Comparisons of the differential cross-sections and/or differential charge state fractions are being used to extract information about projectile charge effects on the collision dynamics as well as about the importance of various ionization mechanisms. Examples for ionization of argon and krypton atoms and nitrogen molecules are presented.
R. D. DuBois et al., "Doubly and Triply Differential Ionization Studies using Positrons and Electrons," Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, vol. 241, no. 1 - 4, pp. 19-22, Elsevier, Dec 2005.
The definitive version is available at http://dx.doi.org/10.1016/j.nimb.2005.07.232
National Science Foundation (U.S.)
Keywords and Phrases
Cross-Section; Electron; Positron; Ionization
Article - Journal
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