Electron beam transport in dusty plasma

The propagation of low-relativistic electron beams through dusty plasmas was studied experimentally within wide ranges of the plasmagenerating gas pressures, dust densities, and beam characteristics. The peculiarities of the transport of focused and defocused beams were revealed for various combinations of the parameters mentioned above. In particular, three various modes of the beam transport were observed and the conditions of the transitions from one mode to another were found. The values characterizing the beam absorption and scattering in dusty media were measured for each mode of the beam transport. The experimental results were compared with the data of the computer simulation, and the developed method of simulation was shown to describe the beam–plasma interaction correctly.