Figure 4.

Normalized intensity as a function of activation voltage for selection of conformer A converting to conformers B and C, and fragmenting (top left). Here open circles, open squares, and open triangles represent the normalized intensities of conformations A, B, and C, respectively at the given activation voltages. The solid line represents the normalized intensity of all observed fragments originating from the selected ions. Normalized intensities of conformation A selected, A made from the selection of conformation B, and A made from the selection of conformation C are shown in the top right spectrum. The symbols for each conformation are the same as given above. Similarly, intensities for conformation B and conformation C (selected and formed) are shown in the bottom left and the bottom right plots, respectively. The bracketed line above 38-64 V denotes the quasi-equilibrium (QE) region prior to fragmentation. The dashed line denotes the average for each conformation at equilibrium. See text for discussion. Data for these plots were obtained from experiments performed using a He buffer gas pressure of ~3.0 Torr.