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. Author manuscript; available in PMC: 2009 Jun 8.
Published in final edited form as: Anal Chem. 2008 May 31;80(14):5367–5376. doi: 10.1021/ac8003488

Figure 9.

Figure 9

Calculated number of triply charged neurotensin ions transmitted from the funnel exit electrode into the collisional quadrupole as a function of the ion beam radius. Data were obtained with SIMION 8.0. Each data point represents normalized transmission of 50 particles through the funnel/quadrupole interface. The gap between the ion funnel exit electrode and the collisional quadrupole rods was 1 mm. The estimated pressure in the gap was 100 mTorr. The collisional quadrupole rf voltage was 2.5 kVpp.