Fig. 5: Direct comparison of the temperature dependence of the relaxation time at different Q’s.

(a) Relaxation time τslow and (b) average relaxation time 〈τslow〉 normalized to that at T = 402 K at representative Q’s. Smaller deviations from Arrhenius behavior (the straight dash line) are evident at larger Q’s in both cases. Error bars represent one standard error and where not seen they are smaller than the symbol size.