Spin and spatial dynamics in electron-impact scattering off S-wave He using R-matrix with Time-Dependence theory

Abstract

R-matrix with time-dependence theory is applied to electron-impact ionisation processes for He in the S-wave model. Cross sections for electron-impact excitation, ionisation and ionisation with excitation for impact energies between 25 and 225 eV are in excellent agreement with benchmark cross sections. Ultra-fast dynamics induced by a scattering event is observed through time-dependent signatures associated with autoionisation from doubly excited states. Further insight into dynamics can be obtained through examination of the spin components of the time-dependent wavefunction.

6 pages, 5 figures

References in corpus (2)

• A combined R-matrix eigenstate basis set and finite-differences propagation method for the time-dependent Schr\"{od}dinger equation: the one-electron case
• Harmonic generation of noble-gas atoms in the Near-IR regime using ab-initio time-dependent R-matrix theory