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Modulator - repetitively pulsed field emission electron beam gun interface. Research and development technical report

Technical Report ·
OSTI ID:7289524
A field emission electron beam gun is repetitively pulsed with a modulator in a Blumlein arrangement. The modulator is operated in an unmatched condition with the output connected directly to the gun. The gun is a time varying monotonically decreasing impedance load while the modulator impedance is constant. The modulator-gun configuration produces an initial voltage peak which approaches twice the value of the charge voltage to promote gun emission. After the initial peak, the load voltage assumes a value determined by the gun impedance. Peak voltages in excess of 350 kV and peak currents up to 8 kA have been delivered in 5 microseconds pulses by the modulator to the gun. The modulator routinely operates at 50 Hz repetition rate, 135 kV recharge voltage and about 3 amps of average current. (Author)
Research Organization:
Army Electronics Command, Fort Monmouth, NJ (USA)
OSTI ID:
7289524
Report Number(s):
AD-A-039460; ECOM-4489
Country of Publication:
United States
Language:
English