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. Author manuscript; available in PMC: 2012 Jul 1.
Published in final edited form as: Anal Chem. 2011 Jun 13;83(13):5078–5085. doi: 10.1021/ac200985s

Fig. 3.

Fig. 3

Same as Fig. 2 for the 2+, 3+, and 4+ ions, using DV = 5.4 kV and 0 – 50% He (20 – 50% He for 2). The peak widths (V/cm) with R values underneath are given for the major well-shaped peaks at 50% He.