Ionization in coplanar symmetric (e,2e) experiments ofN2and CO at intermediate energies

The Distorted-Wave Born Approach for Calculating Electron-Impact Ionization of Molecules

“…Gao et al presented DWIA results for electron-impact ionization of N 2 [156] for incident electron energies between 35.6 eV and 400 eV. The DWIA results were compared to the experimental data of Rioual et al [187] as well as Hussey and Murray [147]. There was reasonable agreement at intermediate to high incident electron energies.…”

Triply differential (e,2e) cross sections for ionization of the nitrogen molecule at large energy transfer

“…A large body of theoretical and experimental works have been reported for EMS studies of molecular targets, see, e.g. [2,4] and references therein, whereas studies concerned with the dynamics of the ionization process of molecules are less numerous [5][6][7][8][9][10][11][12], mainly due to the difficulty in developing a realistic theoretical model to describe this process. However, there has recently been a renewed interest in such dynamics studies, both experimentally [13,14] and theoretically [15][16][17][18][19][20][21].…”

Low energy (e, 2e) differential cross-section measurements on the 1πgand 4σgmolecular orbitals of CO2

“…Studies of the ionization dynamics of molecular targets are less common,and include those by Jung et al (1975) and Chérid et al (1989) for H 2 ; Jung et al (1975), Avaldi et al (1992), Doering and Yang (1996), Rioual et al (1996) for N 2 ; Rioual et al (1996) for CO; Doering and Yang (2001) for O 2 ; Cavanagh and Lohmann (1999) for N 2 O and Avaldi and Camilloni (1990) for C 2 H 2 . As far as we are aware, Rioual et al (1996) present the only results collected using a coplanar symmetric geometry for ionization of the two outer valence orbitals of N 2 . The remaining studies are all conducted under coplanar asymmetric kinematics.…”

“…By contrast, in coplanar symmetric kinematics the angles of both scattered and ejected electrons are varied, resulting in K also varying. The results presented here are collected using a coplanar symmetric geometry and therefore can be principally compared with the results of Rioual et al (1996). However, to place previous studies in context, the results of experiments conducted using asymmetric kinematics are also briefly discussed.…”

“…Previous experiments conducted on N 2 all used a coplanar asymmetric geometry (Jung et al 1975, Avaldi et al 1992, Doering and Yang 1996 with the exception of Rioual et al (1996) who adopted a coplanar symmetric geometry. Jung et al (1975), Avaldi et al (1992) and Doering and Yang (1996) all used incident electron energies between 100 and 300 eV with momentum transfer K ∼ 0.36 au.…”