Cyclotron resonance maser experiments in first and second harmonics

Book · Wed Nov 01 04:00:00 EST 1995

OSTI ID:116406

Shahadi, A; Drori, R; Jerby, E ^[1]

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1. Tel Aviv Univ., Ramat Aviv (Israel). High-Power Microwave Lab.

Cyclotron-resonance maser (CRM) oscillator experiments in a non-dispersive (TEM-mode) waveguide are reported in this paper. The table-top CRM oscillator constructed in the laboratory operates with a low-energy (< 5 keV), low-current (< 1 A) electron beam. The electron beam is rotating in the cyclotron frequency due to an axial magnetic field produced by an external solenoid. The large electron transverse velocity, needed to obtain amplification in a TEM-CRM, is achieved by a strong kicker coil. The coplanar waveguide used in this experiment supports odd and even TEM-modes, and enables cyclotron interactions with both first and second harmonics. Microwave output power at the first cyclotron harmonic is observed in the range of 3--6 GHz, where the frequency is tuned by the axial magnetic field in this range. A considerable second harmonic emission is observed around 7 GHz frequency. This experiment may lead to the development of a new compact high-power microwave source.

• OSTI ID: 116406
• Report Number(s): CONF-950793--; ISBN 0-8194-1916-8
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
CYCLOTRON HARMONICS
EXPERIMENTAL DATA
INTERACTIONS
MASERS
MICROWAVE RADIATION
OSCILLATION MODES
TUNING