A pulsed self-collimated intense electron beam of diameter less than 1 mm, a few centimetres in length and up to 280 A peak current, 20 ns pulse duration and 50 Hz repetition rate is produced along the axis of a cylindrical discharge tube using the synergy of two discharges. It needs neither bore holes nor internal electrodes and can be obtained in various gases and for a large range of tube diameters.