Figure 2.

(a) Positive ion mass spectrum of FeCO₄MA recorded at 70 eV incident electron energy measured using the CLUB experimental setup. (b) 2D plot of the dependence of positive ion mass spectra on the incident electron energy. The logarithm of the ion intensity is color-coded as shown by the color bar on the right. The small horizontal dashes mark the calculated threshold energies from Table 1 below.