Abstract
Singly, doubly, and triply differential information, obtained from coincidence measurements, are presented for 250-eV positron- and electron-impact ionization of molecular nitrogen. Comparisons of these data as functions of energy loss, scattering, and emission angles illustrate differences associated with the sign of the projectile charge. Via a deconvolution and normalization procedure, the triply differential data are converted to absolute cross sections. By fitting the triply differential cross sections for single ionization with simple functions, the intensities, directions, and peak to background intensities of the binary peaks plus the ratio of recoil to binary interactions are compared for positron and electron impact. Formulas for the binary and recoil intensities plus for the orientation of the binary peak as a function of momentum transfer are extracted from the data. Differences in the relative amount of fragmentation as a function of energy loss are also observed.
Recommended Citation
O. G. De Lucio and R. D. DuBois, "Differential Studies and Projectile Charge Effects in Ionization of Molecular Nitrogen by Positron and Electron Impact," Physical Review A, vol. 93, no. 3, article no. 032710, American Physical Society, Mar 2016.
The definitive version is available at https://doi.org/10.1103/PhysRevA.93.032710
Department(s)
Physics
International Standard Serial Number (ISSN)
2469-9934; 2469-9926
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2024 American Physical Society, All rights reserved.
Publication Date
25 Mar 2016
Comments
National Science Foundation, Grant IN116916