Influence of rotational coupling on charge transfer in low-energy C⁴⁺/H collisions

Charge Exchange in Low-Energy H, D + C4+ Collisions with Full Account of Electron Translation

“…The calculated partial and total cross sections are in agreement with the previous low-energy calculations [19,20,26,27,29,30] and the available experimental data [27,39,40]. The recent experimental data [41] for D + C 4+ collisions at low energies are in agreement with the present partial cross section for the excitation of the C 3+ (3p) state.…”

“…The present calculations are also in agreement with the previous calculations of Ref. [19,20,26,27,29] and the available experimental data for the total cross sections of the charge exchange processes (1) and (2) [27,39,40]. As the example, the experimental data [39] for H + C 4+ collisions are shown in Fig.…”

“…The recent experimental data [41] for D + C 4+ collisions at low energies are shown by squares; it is seen that these data are in good agreement with the partial cross section for the excitation of the C 3+ (3p) state. As discussed in the literature, the cross section [41] are smaller than both experimental [27,39,40] and theoretical [19,20,26,27,29,30] total cross sections. For the detailed discussion of the theoretical results and the comparison with experiment for H, D + C 4+ collisions see Ref.…”

“…It has been shown in Ref. [26] that at low collisional energies E for the charge exchange process (1) the rotational couplings can be neglected, and the theoretical treatment can be restricted to Σ states. In this case, the wave function for the total system can be written as a sum of terms Ψ J M J (r, R), each of them is characterized by the total angular momentum quantum numbers J and M J (M J ≥ 0) and expanded as…”

“…have served as a model system several times in the past (see, for example, [19,20,26]- [31]). As the application of the t/τ -matrix approach to the processes (1) and (2) does not need additional calculations, the above processes are well suited for performing of the dynamical treatment with full account of electron translation.…”