Accession Number:

ADA183073

Title:

Nonlinear Theory of the Orbitron Maser in Three-Dimensions.

Descriptive Note:

Memornadum rept.,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

• Ganguly,A. K.
• Freund,H. P.
• Ahn,Saeyoung

Report Date:

1987-06-30

Pagination or Media Count:

31.0

Abstract:

The nonlinear analysis of the Orbitron Maser is studied numerically for an amplifier configuration in which an electron beam propagates through a coaxial waveguide with a voltage applied between the inner and out conductors. A set of coupled nonlinear differential equations is derived in three dimensions which governs the self consistent evolution of either the TE, TM, or TEM modes in a loss-free coaxial waveguide as well as the trajectories of an ensemble of electrons. The saturation efficiency as well as the linear growth rate are calculated and, although the linear growth rate for the orbitron amplifier is moderately high about 1.0 dBcm, the efficiency is low somewhat 6.1. Severe limitations arise in the high frequency operation of the orbitron amplifier in the fundamental mode due to the break-down electric field and extremely small radius of the inner conductor.

Descriptors:

• *MASERS
• *COAXIAL CONFIGURATIONS
• WAVEGUIDES
• ELECTRON BEAMS
• RADIUS(MEASURE)
• GROWTH(GENERAL)
• LINEARITY
• RATES
• NONLINEAR SYSTEMS
• THEORY
• BREAKDOWN(ELECTRONIC THRESHOLD)
• ELECTRIC FIELDS
• COUPLING(INTERACTION)
• NONLINEAR DIFFERENTIAL EQUATIONS
• ELECTRONS
• HIGH FREQUENCY
• OPERATION
• EFFICIENCY
• SATURATION
• CONSISTENCY
• EVOLUTION(GENERAL)
• HIGH RATE
• INTENSITY
• LIMITATIONS

Subject Categories:

• Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE