Igor Bray

TL;DR: In this paper, the symmetrized gerade and ungerade amplitudes of the helium atom double photoionization are extracted from the convergent close-coupling calculations at fixed excess energies of 9, 20, 40, and 60 eV above the double-ionization threshold, and varying energy-sharing ratios.

TL;DR: In this article, convergent close-coupling calculations of electron-impact dissociation of the ground state of molecular hydrogen into neutral fragments over the range of impact energies from 6 to 300 eV were presented.

TL;DR: In this paper, theoretical results for electron-impact ionization of He(1s2), leaving the ion in the n = 2 excited states, are presented for the first-order plane-wave Born approximation, whereas the interaction between the ejected electron and the residual ion is treated nonperturbatively within the convergent close-coupling formalism.

TL;DR: In this article, an atom trapping technique for determining absolute, total ionization cross sections (TICS) out of an excited atom is presented, which is a variant of the trap loss technique.

TL;DR: In this paper, a wavepacket continuum-discretisation approach is used to calculate excitation, ionization and electron-capture (ec) cross sections for proton collisions with n = 2 states of atomic hydrogen, where n is the principal quantum number.