Classical study of single-electron capture and ionization processes inAq++(H,H2

Atomic-Orbital Close-Coupling Calculations Of Electron Capture From Hydrogen Atoms Into Highly Excited Rydberg States Of Multiply Charged Ions

“…The latter cross sections are statistically averaged cross sections for H(2s), H(2p 0 ), H(2p 1 ), and H(2p -1 ) [3]. Our data [3] for the H(1s) target show very good agreement with data calculated by Minami et al in the lattice time-dependent Schrödinger equation (LTDSE) approach [7], classical trajectory Monte Carlo (CTMC) cross sections from Illescas and Riera [8], and recommended cross sections for C 4+ ions from Janev et al [9]. In the case of the H(n=2) target, CTMC cross section from Errea et al [10], LandauZener data from Casaubon [11], and another set of CTMC calculations from Hoekstra et al [12] are shown in Fig.1a for comparison.…”

“…Cross Section [10 1. Total charge exchange cross sections for (a) Be 4+ + H(1s) in comparison with data from [7], [8], [9] and for (b) Be 4+ + H(n=2) in comparison with data from [10], [11], [12]. A more elaborate analysis of these results can be found in [3].…”

“…Fig.2 shows that these AOCC ION cross sections agree very well with CTMC [14]. The total CX cross sections are compared to earlier AOCC calculations including pseudostates (AO+) [15], CTMC data [8], as well as scaled cross sections calculated using the ADAS315 routine [16] included in the Atomic Data and Analysis Structure (ADAS) software and data package.…”

Switching classical trajectory Monte Carlo method to describe two-active-electron collisions

“…022710 Abrines and Percival introduced 50 years ago a statistical classical approach to atomic collisions [1], which since then has become one of the most useful methods to calculate cross sections and to picture the mechanisms underlying inelastic processes (see, e.g., [2][3][4][5][6] and references therein). This approach, which employs classical mechanics to describe nonadiabatic dynamics in terms of noninteracting electron trajectories, is referred to as the classical trajectory Monte Carlo (CTMC) method.…”

Comment on “Classical description ofH(1s)andH*(n=2)for cross-secti

“…Since the microcanonical distributions are stable, the HED is also time independent. The coefficients of the combination are obtained [4,9,10] by imposing that the average energy is equal to that of the corresponding quantum level, E n . It is also ensured that the distributions included in the combination fulfill the conditions [11,12]:…”