Recent Developments of High-Power Cyclotron Resonance Maser

Ferrite-guided cyclotron-resonance maser.

The concept of a cyclotron-resonance maser (CRM) with a ferrite loading incorporated in its waveguide is proposed. The CRM interaction occurs between the rotating electron beam and the em wave propagating along a longitudinally magnetized ferrite medium. The ferrite anisotropic permeability resembles the CRM susceptibility in many aspects, and particularly in their similar response to the axial...

Recent Developments in Maser Theory

This review covers selected developments in maser theory since the previous meeting, Cosmic Masers: From Proto-Stars to Black Holes (Migenes & Reid 2002). Topics included are time variability of fundamental constants, pumping of OH megamasers and indicators for differentiating disks from bi-directional outflows.

Cyclotron-resonance maser in a magnetic mirror.

A cyclotron-resonance maser (CRM) experiment is performed in a high-gradient magnetic field using a low-energy electron beam ( approximately 10 keV/1 A). The magnetic field exceeds 1.63 T, which corresponds to a 45-GHz cyclotron frequency. The CRM radiation output is observed in much lower frequencies, between 6.6 and 20 GHz only. This discrepancy is explained by the finite penetration depth of...

Linear analysis of a multibeam cyclotron-resonance maser array

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 wav...

Small-signal analysis of the induced-resonance electron-cyclotron maser.