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. Author manuscript; available in PMC: 2009 Feb 1.
Published in final edited form as: J Am Soc Mass Spectrom. 2007 Nov 1;19(2):173–189. doi: 10.1016/j.jasms.2007.10.018

Figure 14.

Figure 14

Schematic drawing of a modified quadrupole time-of-flight tandem mass spectrometer (QSTAR XL). The plots below show the potential along the instrument axis at different steps for single ion/ion reaction experiments. Reprinted from reference [74] by Xia et al. with permission from Anal. Chem. 2006, 78, 4146–4154. Copyright 2006 American Chemical Society.