Linear analysis of a multibeam cyclotron-resonance maser array
نویسندگان
چکیده
The multibeam cyclotron-resonance maser ~CRM! array is a new concept for compact, high-power CRM devices operating at low voltages. The CRM array studied in this paper employs low-energy electron beams, which are propagating in coupled channels in a two-dimensional periodic waveguide. A static magnetic field spirals the electrons in synchronism with a spatial harmonic of the electromagnetic wave. A matrix gaindispersion equation of the CRM-array interaction is derived in the paper. Numerical examples are presented for a comparison between CRM interactions of one, two, and three electron beams with various waveguide modes. The analysis shows that the multibeam cyclotron interaction yields a considerable gain of microwaves in selective modes. @S1063-651X~97!09204-0#
منابع مشابه
Two-dimensional cyclotron-resonance maser array: Spectral measurements with one and two electron beams
The cyclotron-resonance-maser ~CRM! array is a device in which separate electron beams perform simultaneously a cyclotron interaction with a single Bloch wave in an artificial lattice. The CRM array has the capability of generating high-power microwaves with relatively low-voltage electron beams. The low-voltage operation reduces the system overhead and leads to a relatively compact device. In ...
متن کاملPfc/ja-85-4 Free Electron Laser or Cyclotron Maser Instability?
An analysis of recent free electron laser experiments in combined wiggler and strong axial magnetic fields shows that near resonance, Q,,=kwv,,, the proximity of the cyclotron maser instability precludes an unambiguous identification of the radiation mechanism ( 2,, is the cyclotron frequency in the axial field, kw is the wiggler wavenumber, and v,, the axial electron velocity).
متن کاملCyclotron-resonance maser in a periodically loaded quadrupole transmission line.
A cyclotron-resonance maser (CRM) is implemented in a periodic quadrupole waveguide. The device oscillates at the fundamental and high harmonics of the cyclotron frequency. This CRM employs a tenuous low-energy electron beam ( approximately 10 keV, 0.2 A). The periodic structure consists of an array of disks along the quadrupole transmission line, hence it combines both azimuthal and axial peri...
متن کاملTheory of the anomalous Doppler cyclotron-resonance-maser amplifier with tapered parameters
The theory of a slow-wave cyclotron-resonance-maser ~CRM! amplifier employing an initially linear electron beam is developed. In such a device, the electrons radiate electromagnetic waves under the anomalous Doppler effect. In order to maintain the cyclotron resonance between the radiating electrons and the amplifying electromagnetic wave, we consider a system with tapered waveguide parameters....
متن کاملPfc/ja-89-31 Pulse Shapes for Absolute and Convective Cyclotron-resonance-maser Instabilities
This paper contains a linear analysis of pulse shapes produced by a spatial and temporal delta-function disturbance of cyclotron-resonance-maser modes for the case where the initial equilibrium state is free of radiation. A pinch-point analysis based on the theory of Briggs and Bers is employed. Numerical and analytical techniques are developed for the straightforward calculation of pinch-point...
متن کامل