PONDEROMOTIVE EFFECT OF INTENSE MICROWAVE RADIATION ON A TRANSVERSE ELECTRON BEAM.

The radiation pressure exerted by the (H//1//0) microwave mode on an electron beam in a waveguide is studied experimentally. The electron beam, stabilized by a magnetic field, is in the direction of the Poynting vector of the incident H//1//0 mode. The accelerating force is independent of the wave polarization and decreases with increasing standing-wave ratio. The experimental results show that the acceleration increases with the energy density of the H//1//0 mode and that the specific radiation force increases with the number of beam particles (coherent accelerating force left bracket V. I. Veksler, Atom. Energ. 2, 427 right bracket ). Under certain conditions oscillations and waves do not appear in the accelerated beam. The experimental data are compared with the calculations. The discrepancy between the theoretical conclusions and the experimental results is explained.