Current kinetics of switched ion cyclotron resonance (ICR) condition. Kinetics in arbitrary units (a.u.) of the ICR condition to a glutamic acid / HCl solution (2.24 mM, pH 2.85). The static magnetic field B
(40 μT) was applied permanently, the alternating field B
(50 nT, 4.14 Hz) was applied as indicated by "on" and "off". One experiment consists of a set of 101 DNLDS spectra performed by a 2 Hz sinus signal with 100 mV Amplitude. The data first 5 harmonics (2, 4, 6, 8, 10 Hz) where normalized and then averaged. Data are calculated out of 12 independent experiments. The grey lines mark the standard deviations, the dotted straight line shows the linear regression of the negative drift, represented by the equation y = -0.0039t + 0.5015.