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  • Title: Development of all-solid-state flash x-ray generator with photoconductive semiconductor switches.
    Author: Xun M, Jianjun D, Hongwei L, Jianqiang Y, Jinfeng L, Bing W, Yanling Q, Wenhui H, Lingyun W, Pin J, Hongtao L.
    Journal: Rev Sci Instrum; 2014 Sep; 85(9):093307. PubMed ID: 25273719.
    Abstract:
    A compact, low-jitter, and high repetitive rate all-solid-state flash x-ray generator making use of photo conductive semiconductor switches was developed recently for the diagnostic purpose of some hydrokinetical experiments. The generator consisted of twelve stages of Blumlein pulse forming networks, and an industrial cold cathode diode was used to generate intense x-ray radiations with photon energy up to 220 keV. Test experiments showed that the generator could produce >1 kA electron beam currents and x-ray pulses with ~40 ns duration under 100 Hz repetitive rates at least (limited by the triggering laser on hand), also found was that the delay time of the cathode explosive emission is crucial to the energy transfer efficiency of the whole system. In addition, factors affecting the diode impedance, how the switching synchronization and diode impedance determining the allowable operation voltage were discussed.
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