Electron double differential cross sections for ionization of O2 under fast C6+ ion impact and interference oscillation

S. NANDI; A. N. AGNIHOTRI; C. A. TACHINO; R. D. RIVAROLA; F. MARTÍN; L. C. TRIBEDI

PHYSICA SCRIPTA - (Print)

IOP PUBLISHING LTD

Lugar: Londres; Año: 2013 vol. T p. 140381 - 140384

0031-8949

The absolute double differential cross sections (DDCS) have been obtained for electron emission from oxygen molecules under the impact of bare carbon ions. The DDCS values are measured between an energy range of a few eV to 600 eV and over an angular range of 30?150 degrees. These are then compared with the continuum distorted wave-eikonal initial state (CDW-EIS) calculations. The DDCS values for O2 are divided by that of atomic oxygen (calculated theoretically) to look for any oscillatory behaviour arising from Young-type interference. In addition, the DDCS ratios are further divided by a fitted straight line to extractany primary interference oscillation. Although a negative result has been obtained, these observations are in qualitative agreement with the prediction of the CDW-EIS model used.