抄録
Experimental studies are presented on the propagation of an intense pulsed proton beam through a wall-initiated, overlapping, z-discharged plasma channel in the presence of return paths. From the measurements by an image converter camera and a small-sized magnetic probe, we have found the compression of the main channel (or deformation) due to the enhancement of the azimutal magnetic field. Good efficiency of the propagation has been observed. These results seem to give useful suggestions to design a reactor in a future by multiple channels.