Differential cross sections for elastic scattering and electron detachment in collisions of halogen anions with noble gas atoms

• Published in: Chemical physics Vol. 68; no. 3; pp. 261 - 274
• Main Authors: De Vreugd, C., Wijnaendts^van Resandt, R.W., Delos, J.B., Los, J.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.07.1982
• ISSN: 0301-0104
• DOI: 10.1016/0301-0104(82)87033-X

Electron detachment in collision of halogen anions and noble gas atoms was investigated in the collision energy range of 500-3000 eV. Differential cross sections were determined both for elastic scattering and for the electron detachment process in the angular range of 0-3°. It was found that direct electron detachment, due to the interaction of the discrete ion-atom state with a continuum of states increases with increasing collisional energy. Furthermore, the experimental evidence indicates that direct detachment primarily occurs in a limited range of impact parameters. A model, based on angular coupling, is described which qualitatively explains these two experimentally observed features.