L-Shell Contributions to Multiple Ionization of Ari+ Ions (i=1, 2, 3) by Electron Impact

Abstract

With the use of crossed beams of electrons and multiply charged argons ions, dominant contributions (above 90%) of $L$-shell ionization to multiple ionization of ${\mathrm{Ar}}^{i+}$ ions ($i=1, 2, 3$) at electron energies below 800 eV are identified. The observed contributions are explained in terms of the electron rearrangement processes following $L$-shell ionization.