Electron-impact-excitation cross sections of hydrogenlike ions
Electron-impact-excitation cross sections of hydrogenlike ions
Convergent close-coupling (CCC) and Coulomb-Born with exchange and normalization (CBE) methods are used to study electron-impact excitation of hydrogenlike ions. The nl\ensuremath{\rightarrow}${\mathrm{n}}^{|\mathrm{I}\mathrm{H}}$${\mathrm{l}}^{|\mathrm{I}\mathrm{H}}$ cross sections demonstrate (i) good agreement between the CCC and CBE results, (ii) a scaling over ion nuclear charge z, (iii) a domination of the dipole (${\mathrm{l}}^{|\mathrm{I}\mathrm{H}}$=l\ifmmode\pm\else\textpm\fi{}1) contributions …