Formation of high-brightness REB to generate THz radiation in beam-plasma system

Terahertz emission from plasma with strong Langmuir turbulence excited by high current relativistic electron beam (REB) is experimentally studied at the GOL-3 facility (BINP)
¹
. The typical parameters of the beam used in the experiments, were the following: 0.6÷0.8 MeV/20 kA/10 μs. In recent experiments the beam current density was about 1÷2 kA/cm
²
in a plasma column with the density ∼ 2·10
¹⁴
cm
⁻³
that allowed us to get sub THz-emission with a power of a few kW/cm
³
in the frequency range 100÷400 GHz.