Fig. 9

Plots showing the (top) ion beam current created from the carbon dioxide molecular gas with an acceleration voltage of 10.0 keV as a function of the E x B filter electromagnetic coil current and (bottom) the mass per charge of the incident ion as a 3rd order polynomial function of the electromagnetic coil current in the same formats as Fig. 7. The polynomial function in the bottom panel was constrained by the \({\text{C}}^{+}\), \({\text{O}}^{+}\), \({\text{CO}}^{+}\), and \({\text{CO}}_{2}^{+}\) ion beam currents