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The radiogprahic characteritics of the condenser-discahrge stroboscopic x-ray genrator and its application to high-speed radiogprahy are described.This gnerator employs a coneser- discharge medical x-ray gnerator in conjunctionwith a new grid-control unit and consists of the following major componets: a high -voltage control unit, a condenser unit having a Cockcroft circuit,a grid-control unit, a high- voltage grid-control unit,a nd a rotating-anode x-ray tube unit.The main condesner of about 500 nF in the unit is charged up to 120 kV by the circuit and the electric charges inthe condene are dischargd to the triode by the grid control unit i9n conjunction with a hgih-voltage grid-control unti The highv-otalgd grid-control unit is employed inorder to insulate the negative hgih-voltage grid and acathode electrods from th ehgihs-peed grid control unit with almost the ground potnetial. Inthis gnerator, th anode and cathode lectrodes ar applied tohigh-voltages with maximumvalues of +60 kV and -60 kV, respectively. Although the tube voltrage decased during the discharging for gnerating x-rays, the maximum vlaue was equivlaent to th eitnital charging vortlag eof th emiain condenser. Th3 amsximu values of the tub ecurrent and the repetiton rat3 awer about 0.5 A and 32 kHz, respectively. The pulse widthof the x-rays ranged from 0.01 to 1.0 ms, and the maximumshot number ahd a vlaue of 32. At a constant filament (cathode) tmerpature,the x-ray intensity incrased accordign to incrases in teh charging voltage and toincrases in the duration and the maximum intensity with a duration of 1.0 ms and a charging voltage of 100 kV awas 0.66 (mu) C/kf at 1.0 m from the -ray source.The dimensiosn sof the focal spot had values of about 1 X 1 mm, and both the inner and outer triggering for produicng pulse c-rays acan be employed. The hgih-speed radiogrpahy was primari9ly performed by temultpe- shot radiogprhay using a new computed radiogprhay (CR) system in conjuctiown tiht ehcomuter-dispaly sysem with an operationsyste of Windows NT Workstation 4.0.
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