Current transients intersection

Figure 17. Current transient obtained on an Ag (111) face (5 = 2 x lO cm ) intersected by one screw dislocation at 1.15 mV IR correction) after a steady state growth at 0.25 mV (a). The initial part of the transient in an / vs. plot (b). ...

An anomalously high degree of dispersion is immediately evident from the fig-nre. There is no flat part, characteristic of idealized current response, to specify a transit time. The transit time is defined by the log / - logt. It is necessary to note that there exist some disadvantages of nsing logarithmic conversion of the transient cnrrent to extract the transit time. In fact, the intersection of power laws and... 

The transient behavior of Ag(lll) and Ag(lOO) crystal faces intersected by only one screw dislocation (A disl = 1) has been investigated in the system standard Ag(M0/AgNO3 [5.83]. A typical current density transient obtained on an Ag(lll) face is shown in Fig. 5.42. A linear i vs. t dependence is obtained for the initial part of the transient (Fig. 5.42b) in agreement with eq. (5.32). 

Figure 5.42 Current density transient obtained on an Ag(lll) crystal face intersected by one screw dislocation in the standard system Ag(lll)/AgN03 at 7i = - 0.25 mV and / f = - 1.15 mV [ 5.83]. (a) Overall transient (b) i vs. t plot of the initial part of the transient in (a).

Although the interelectrode separations were known with good precision in this set of experiments (6), the extent to which SG/TC transients could determine both the rate constant and interelectrode separation was also examined. Figure 13 shows the sets of interelectrode spacings and rate constants that are consistent with the peak currents and peak times derived from the transients in Figure 12. The intersection of the two contours on each... 

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