Abstract

A flash x-ray tube has been fabricated and has been driven by a Blumlein pulse generator to peak voltages of 60 to 80 kV and peak anode currents of 8 to 10 kA. The pulse width, dependent upon the anode-cathode spacing, can be made ∼80-ns wide, and a small spot or line focus is possible. These features make the device useful for flash x-ray diffraction studies. Current in the diode region exceeds the calculated space-charge limited values, probably because of neutralization of charge by plasma ejected from the cathode during the initial phase of the discharge.

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