File Name : figure s-1.pdf Caption : figure s1. (a) the cid mass spectra of reserpine ion (m/e =609) for crit with x¬0×y0=6.5 mm×5.0 mm when q was fixed at 0.3522. (b) the cid mass spectra of reserpine ion (m/e =609) for crit with x¬0×y0= 7.0 mm×5.0 mm when q was fixed at 0.3522. (c) relationship between q and the optimum trapping waveform frequency f for the maximum cid efficiency of x¬0×y0=6.5 mm×5.0 mm (d) relationship between q and the optimum trapping waveform frequency f for the maximum cid efficiency of x¬0×y0=7.0 mm×5.0 mm File Name : figure s-3.pdf Caption : preview signal of rf and ac voltage File Name : figure s-4.pdf Caption : (a) the simulative ion trajectory of resonance excitation in the crit using dit, (b) the simulative frequency spectra of reserpine in the crit when there is no ac, (c) the simulative frequency spectra of reserpine in the crit when there is a ac. File Name : figure s-5.pdf Caption : simulated relationship between q and f of different crits