Inelastic Heavy Particle Collisions Involving the Crossing of Potential Energy Curves III: Charge Transfer from Negative Ions of Atomic Hydrogen to Protons

1955 ◽  
Vol 68 (3) ◽  
pp. 173-180 ◽  
Author(s):  
D R Bates ◽  
J T Lewis
Keyword(s):  
Charge Transfer ◽  
Potential Energy ◽  
Atomic Hydrogen ◽  
Heavy Particle ◽  
Negative Ions ◽  
Potential Energy Curves ◽  
Particle Collisions

The dependence of the rate of electrochemical charge transfer on the electric field at the metal-electrolyte interface

1972 ◽  
Vol 25 (2) ◽  
pp. 231 ◽  
Author(s):  
DB Matthews
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Potential Energy ◽  
Electric Field ◽  
Electric Fields ◽  
Potential Energy Curves ◽  
Energy Curve ◽  
Electrolyte Interface ◽  
Activated State ◽  
Wide Range

Electric fields at the metal-electrolyte interface are very high (of the order of 107 V/cm) and one intuitively expects that these fields should have a profound influence on the movement of charged species such as ions and electrons at the interface. Qualitatively, such field effects manifest themselves as deviations from linearity of Tafel plots or as a dependence of the symmetry factor on electrode potential. It is shown that Gurney's potential energy curve representation of charge transfer reactions yields only small changes in β over a wide range of potential, with the anharmonic (Morse) curves showing smaller changes than the harmonic (parabolic) curves. Superposition of the double layer electric field on these potential energy curves increases the curvature of the Tafel plots, but the effect is still not very large, being within the limits of uncertainty in determining the correct form of the potential energy curves. The effect of electric field on electron transfer is considered both from the viewpoint of change in electron transfer distance arising from a dependence of coordinates of the activated state on potential and from the viewpoint of a direct effect on the electron transfer barrier (analogous to field electron emission). The field emission effects are found to be even less than the effects of the field on the proton transfer potential energy barrier.

Potential energy curves of ground and excited states of tetra halomethanes and the negative ions

1994 ◽  
Vol 101 (4) ◽  
pp. 2978-2985 ◽  
Author(s):  
S. Roszak ◽  
J. J. Kaufman ◽  
W. S. Koski ◽  
M. Vijayakumar ◽  
K. Balasubramanian
Keyword(s):  
Potential Energy ◽  
Excited States ◽  
Negative Ions ◽  
Potential Energy Curves
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