Calculation of electron scattering on atomic silver

Abstract

We report on the application of the relativistic convergent close-coupling method to electron scattering from silver atoms. Differential and integrated cross sections are presented for elastic scattering and excitation to a number of low-lying excited states for energies ranging from 0.1 to 200 eV. The total and ionisation cross sections and elastic spin asymmetry parameters are also presented, and we find potentially large relativistic effects for elastic scattering at low energies. The results are compared with experiments where available, and somewhat variable agreement is found.

Electron-impact excitation of the (4d105s)S1/22→

“…A further rationale behind this study is to provide a more detailed set of experimental data, against which theory might be benchmarked. This is particularly the case for the present (4d 10 6s) 2 S1/2 cross-section measurements, which are the first against which the RCCC(80) results [12] may be compared.…”

“…In Sec. IV, the current experimental and theoretical DCSs and ICSs are described and discussed, and compared to the earlier RCCC(80) results [12] where possible. Finally, some conclusions from the present investigation are given in Sec.…”

“…Note that in that latter work [10,11], updated RDW results from an improved code were also reported. Perhaps the most comprehensive investigation conducted so far was the relativistic convergent close coupling (RCCC) computation by McNamara et al [12]. Here DCSs and ICSs were reported for the elastic channel and eight excited electronic states of Ag, as well as for ionization [12], for incident electron energies (E 0 ) up to 200 eV.…”

“…Perhaps the most comprehensive investigation conducted so far was the relativistic convergent close coupling (RCCC) computation by McNamara et al [12]. Here DCSs and ICSs were reported for the elastic channel and eight excited electronic states of Ag, as well as for ionization [12], for incident electron energies (E 0 ) up to 200 eV. Nonetheless, excitation of coreexcited levels, such as the energetically low-lying (4d 9 5s 2 ) 2 D5/2 and (4d 9 5s 2 ) 2 D3/2 states, were not considered by Mc-Namara et al [12].…”

“…Here DCSs and ICSs were reported for the elastic channel and eight excited electronic states of Ag, as well as for ionization [12], for incident electron energies (E 0 ) up to 200 eV. Nonetheless, excitation of coreexcited levels, such as the energetically low-lying (4d 9 5s 2 ) 2 D5/2 and (4d 9 5s 2 ) 2 D3/2 states, were not considered by Mc-Namara et al [12]. To quantitatively undertake Monte Carlo simulations or multiterm Boltzmann equation modeling (see, e.g., Refs.…”