Irradiation induced disorder in organic conductors

We present a brief survey of several recent experimental results concerning the transport properties of irradiated 1D. conductors, and we show that a reasonable knowledge of the mechanisms which account for the changes in the D.C. conductivity either at high or low temperatures has been obtained. These mechanisms are: firstly the 1-D blocking effects of defects and subsequent transverse fixed range phonon activated hopping of single electrons in the metallic regime, and secondly the charge density waves pinning either in the metallic or the insulating regime. As a conclusion we show that it is difficult in most of the cases to distinguish between disorded systems and intrinsic or so-called pure ones