M-type

NOISE IN RESISTIVE-WALL AMPLIFIER OF M-TYPE WITH «THICK» BEAM

The aim of our research is to study the noise in the resistive-wall amplifier with crossed electric and magnetic fields with a beam of finite thickness. The theory of the O-type resistive wall amplifier is well known, at least as a classical example of using of waves with negative energy. Theory of resistive-wall amplifier M-type, in which negative energy waves are also used, has not been studied until recently.

WAVE PROCESSES IN THE ELECTRON BEAM IN CROSSED STATIC ELECTRIC AND MAGNETIC FIELDS AS IT MOVES IN A MEDIUM WITH A COMPLEX CONDUCTIVITY

Resistive wall amplifier is vacuum microwave device. The gain is due to the phase shift between a.c. of electron beam and the alternating field components. The absorbing device walls influence on the alternating field components is considered. It is interesting that there is no need for a slowing system that is important to learn the submillimeter range. Furthermore the feedback is completely absent between the output and the input.