Accession Number : AD0601154

Title :   INVESTIGATION OF LINEAR BEAM AND NEW CONCEPTS OF MICROWAVE POWER GENERATION.

Corporate Author : CORNELL UNIV ITHACA N Y SCHOOL OF ELECTRICAL ENGINEERING

Report Date : MAY 1964

Pagination or Media Count : 78

Abstract : In the fundamental studies of electron beams, the propagation of a 3000-Mc/s space-charge wave was investigated along a periodically-varying electron beam, the d-c behavior of which is accurately known. Measured gain rates are in good agreement with those predicted by the theory of scalloped-beam amplification. In the beam-circuit interaction area, progress was made on computations of the effects of distributed interaction circuits and biased gaps on the efficiency of two-cavity klystrons. The nanosecond pulse study is concerned with the response of microwave amplifiers to short pulses of the order of a few r-f cycles long. Study was concentrated on the consequences of limited bandwidth and nonlinear interaction effects on the pulse response. In the beam-plasma area, the strong interaction between an electron beam and a plasma is being studied. In the laser-induced emission area, two different gun and drift-tube structures have been designed and are nearly assembled for investigation of electron-beam formation using laser-induced electron emission. One of these structures is designed for the direct-emission gun, while the other is suited for the indirect-emission gun. (Author)

Descriptors :   (*ELECTRON BEAMS, ELECTROMAGNETIC RADIATION), (*KLYSTRONS, ELECTRON BEAMS), (*MICROWAVE AMPLIFIERS, ELECTROMAGNETIC PULSES), (*PLASMAS(PHYSICS), ELECTRON BEAMS), (*LASERS, ELECTRON BEAMS), MICROWAVE EQUIPMENT, GENERATORS, MICROWAVES, PROPAGATION, SPACE CHARGE, ELECTRON TUBES, CIRCUITS, ELECTRON GUNS

Distribution Statement : APPROVED FOR PUBLIC RELEASE