Jump, ineffective

The sensitivity of the equilibrium constant to temperature, therefore, depends upon the enthalpy change AH . This is usually not a serious limitation, because most reaction enthalpies are sufficiently large and because we commonly require that the perturbation be a small one so that the linearization condition is valid. If AH is so small that the T-jump is ineffective, it may be possible to make use of an auxiliary reaction in the following way Suppose the reaction under study is an acid-base reaction with a small AH . We can add a buffer system having a large AH and apply the T-jump to the combined system. The T-jump will alter the Ka of the buffer reaction, resulting in a pH jump. The pH jump then acts as the forcing function on the reaction of interest. 

Correlation diminishes the effectiveness of atomic jumps in diffusional random motion. For example, when an atom has just moved through site exchange with a vacancy, the probability of reversing this jump is much higher than that of making a further vacancy exchange step in one of the other possible jump directions. Indeed, if z is the coordination number of equivalent atoms in the lattice, the fraction of ineffective jumps is approximately 2/z (for sufficiently diluted vacancies as carriers) [C. A. Sholl (1992)]. 

For high surfactant concentrations (>5%) the yield is almost stable and remains well above 95% for velocities ranging from 0 to 80 pm.s . Same observations can be done down to 5% of surfactant concentration. When reaching this limit, the yield is not stable anymore in the 0-80 pm.s velocity range. At low speed (t3 ically below 30 pm.s ), no deposition is observed, meaning that the assembly mechanism is ineffective, when increasing the value above 30 pm.s , the yield jumps suddenly above 95% and remains... 

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