ENHANCEMENT OF ELECTRON SPONTANEOUS RADIATION PER UNIT UNDULATOR LENGTH WITH NOVEL MULTICOMPONENT UNDULATOR SCHEME

A novel multicomponent undulator scheme is proposed which has new elem ents inserted between the undulator sections. Such elements induce som e delay of a radiation wave packet with respect to the radiating elect ron. It is shown particularly that for the case of n section undulator n-fold enhancement of the spontaneous radiation along the undulator a xis can be obtained in comparison with the radiation intensity of a un iform device composed of the same undulator sections without the inter section gaps.