Potential ridge line

Figure 11. Resonance positions for H+FH (See Table IV). (q are exact, a adiabatic, d assuming diabatic behaviour at verical lines joining states, da assuming diabatic behaviour between 0 and 1 only). Continuous line is the potential ridge [23]...

Fig. 2, Potential surface of a two-electron system over the plane of configuration space. Lines are drawn on the surface at constant values of R=(r +r2) and of a=tan" (r /r ) ridge line at a=45. Surfaces are drawn for three different values of angle 03 2 shown in inset. (Courtesy M. Cavagnero)...

Fig. 19 The potential energy surface as a function of the reaction coordinate, s, and the dihedral angle, 0. The remaining normal mode coordinates have been relaxed to their minima at each value of 0. The ridge line is shown with a solid black line and the locations of TS2 and TS2 are indicated.

Figure 6 Schematic potential energy surface for a symmetric collinear triatomic system in skewed coordinates (panel a). The dashed and dotted lines correspond respectively to the valley bottoms and ridges, which are represented in panel c as a function of p. In panel b a conventional view of the minimum energy path is sketched as a function of a generic reaction coordinate s.

Figure 5. Adiabatic potential energy curves for H+MuH (dotted) [51, unpublished], see [21] for H+H2. Valley bottom and ridge profile are shown as continuous lines.

A second potential kinetic effect may result from bulk interactions between the surface and the spreading liquid. For example, if the liquid can penetrate the surface (e.g., if the liquid can be absorbed as opposed to adsorbed), the rate of penetration may be so slow that the measured contact angle will not reflect the true equilibrium situation. Likewise, if the liquid swells the surface, the wetting line may lie on a ridge of swollen surface rather than on a flat surface, resulting in an error in 6 (Fig. 17.6). 

Example trajectories that cross the naively taken dividing surface (q = 0) more than once. The horizontal and vertical axes are the normal mode coordinates of the reaction direction and of the vibrational direction, respectively. Thin sohd lines contours of potential energy. Bold solid lines trajectories. Dashed hnes naively taken dividing surface q = 0. Dotted lines ridge of the potential energy surface. 

Fig.7. Hyperbolic umbilic. Equipotential lines (thin), straight orthogonal lines (arrows), general gradient solution curves (broKen arrows), v valley, r ridge, hill. The potential in point + in Fig.6 is...

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