Electron Impact Ionisation of C⁴⁺and O⁶⁺

Electron‐impact single ionization cross sections of helium isoelectronic systems

“…The RBEA model produces a fairly good fit to the experimental data of Crandall et al 39 and Rachafi et al 40, but shows a noticeable discrepancy with the data of Donets and Ovsyannikov 41 (see Figure 4). It is difficult to distinguish between the performance level of the CBX calculations 24 and that of the predictions from the RBEA model.…”

“… Same as Figure 1 for C 4+ . The data are from Crandall et al 39, Donets and Ovsynnikov 41, and Rachafi et al 40. The pluses are the Coulomb–Born calculations from Ref.…”

Calculations of electron-impact single-ionization cross sections of helium isoelectronic systems

“…6, with both the experimental cross sections [46,47] and the theroretical predictions from RBEB [28], BRY [16], DM [33], RBEA [20], DWBA [34], and CBX [37]. Both the RBEB and siBED cross sections are almost alike and underestimate the experimental data.…”

“…1 for C 4+ . The data are from Crandall et al [45], Rachafi et al [46], and Donets and Ovsynnikov [47]. The crosses are the CBX calculations from Ref.…”

“…The discrepancy between the RBEA predictions and the experimental data is reduced from the situation for the previous He and Li + targets. Figure 4 compares the predicted cross sections of C 4+ from siBED, QIBED, RQIBED with the experimental data [45][46][47], the results from the DWBA [34] and CBX [37] theories, and predictions from the RBEB [28], BRY [16], and DM [33] models. Here again siBED and RBEB cross sections are far from the experimental results in the threshold and peak regions, while both QIBED and RQIBED with their almost identical results produce a good agreement with all three sets of data, marking a clear signature of the substantial contribution from the implemented ionic correction.…”