J. Phys. IV France 03 (1993) C6-117-C6-123
Electron impact double ionization of neonM.J. FORD1, J.P. DOERING1, J.W. COOPER2, M.A. COPLAN2 and J.H. MOORE2
1 Johns Hopkins University, Baltimore, MD 21218, U.S.A.
2 University of Maryland, College Park, MD 20742, U.S.A.
Electron-impact double ionization from the valence shell of neon has been measured at an incident electron energy of 3662.5 eV. Double-coincidence (e, (3-1)e) measurements have been made between the scattered electron and each of the ejected electrons in turn, ejected energies were 10 eV and 90 eV, respectively, at ejection angles of 45, 60, 90, 120 and 135 degrees with respect to the incident electron beam. Absolute four-fold-differential cross-sections have been derived from the measured data and can be interpreted in terms of a fast, single-step, shake-off process.
© EDP Sciences 1993