Simple Flash X-ray Tube Having a New Type of Cathode Driven by a Blumlein Pulser

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A simple flash x-ray tube with a new type of cathode and fundamental studies for generating a high-voltage pulse by using a Blumlein circuit are described. This radiation to had the following major parts: a rod-shaped anode tip made of tungsten, a plane cathode made of alum inum which gave two parts of a x-ray window and a metal filter, a vacuum vessel made of glass, and others. The output voltage of this Blumlein pulser ranged from 70 to 160kV, but the tube voltages were determined by the anode-cathode (A-C) space since a pulse-forming device was not employed. The x-ray pulse widths primarily increased according to increases in the A-C space, and their values ranged from 20 to 50ns. The x-ray intensity was less than 1.0μC/kg at 0.3m per pulse when the discharge capacity of about 430<SUB>P</SUB>F was employed. The effective focal spot size was determined by the diameter of anode tip and its value ranged from 0.5 to 3.0mm in diameter.
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