ELECTRON ACCELERATION BY A TRANSVERSE ELECTROMAGNETIC-WAVE SUPPLEMENTED WITH A CROSSED STATIC MAGNETIC-FIELD

An electron linear accelerator has been demonstrated that uses a slow transverse electromagnetic wave (TE wave, 10 kW) supplemented with a c rossed static magnetic field. An initial energy gain of 6.0 keV for el ectrons is observed from an incident energy of 62 keV in a 0.5 m accel erator without an additional external magnetic field. When an external vertical magnetic field of 2.5 G is applied under the same conditions , an additional 7.5 keV energy gain is observed. The results show the feasibility of making a compact accelerator using TE mode electromagne tic waves.