RELAXATION OF CDW POLARIZATION OF VARIOUS INITIAL STATES

We have investigated the decay of the polarization induced by the appl ication of electric field pulses of various lengths. Most experiments were carried out in K0.3MoO3 around 60 K. In this case the characteris tic time of the stretched exponential relaxation between two equilibri um states is a few ms. The pulse length was varied between 5 mus < DEL TAt < 10 ms, and the resulting weak relaxation was detected over 7 dec ades in time. Our results resemble to the ''aging effect'' found in th e low temperature thermal relaxation experiments, but we argue that bo th phenomena can be well described in the framework of a simple linear response theory.