Large-orbit coaxial-structure cyclotron autoresonance maser

Journal Article · Mon Jan 16 00:00:00 EST 2006 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2166687· OSTI ID:20778630

Shichang, Zhang; Thumm, Manfred ^[1]

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1. China Center of Advanced Science and Technology (World Lab), P.O. Box 8730, Beijing 100080 (China) and Institute of Photoelectronics, Campus Mail Box 50, Southwest Jiaotong University, Chengdu, Sichuan 610031 (China)

We present a conceptual proposal for a large-orbit coaxial-structure cyclotron autoresonance maser (CARM), wherein the rf structure is a coaxial waveguide or cavity and a large-orbit electron beam encircles the axis of the coaxial structure. Both dispersion analysis and nonlinear simulations demonstrate the feasibility of the proposal. The large-orbit coaxial-structure CARM could be expected to operate in millimeter and submillimeter wave ranges with high power, low operating magnetic field, and ultrahigh gain. It is found that electron-beam velocity spread substantially decreases the power of CARMs, but this adverse influence might be offset by a proper taper of the axial magnetic field.

• OSTI ID: 20778630
• Journal Information: Applied Physics Letters, Vol. 88, Issue 3; Other Information: DOI: 10.1063/1.2166687; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CYCLOTRONS
DISPERSIONS
ELECTRON BEAMS
MAGNETIC FIELDS
MASERS
NONLINEAR PROBLEMS
ORBITS
SIMULATION
WAVEGUIDES