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A portable flash x-ray generator powered by an explosive driven ferroelectric generator.

Youcheng Wu1, Lidong Geng1, Jianjun Deng1

  • 1Key Laboratory of Pulsed Power, Institute of Fluid Physics, CAEP, P.O. Box 919-108, Mianyang 621999, China.

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|November 1, 2022
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Summary

A compact explosive-driven ferroelectric generator (EDFEG) powers a portable flash x-ray source. This system generates a high-voltage pulse, producing a fast x-ray pulse suitable for various applications.

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Area of Science:

  • Pulsed Power Systems
  • X-ray Generation
  • High-Energy Physics

Background:

  • Development of portable flash x-ray sources is crucial for various applications.
  • Existing pulsed power sources often lack compactness and portability.
  • Explosive-driven ferroelectric generators (EDFEGs) offer potential for compact pulsed power.

Purpose of the Study:

  • To investigate the numerical and experimental performance of a compact explosive-driven ferroelectric generator (EDFEG) for portable flash x-ray generation.
  • To develop and test a prototype portable flash x-ray generator.
  • To analyze the characteristics of the generated high-voltage and x-ray pulses.

Main Methods:

  • A circuit model was developed to analyze the pulsed power source performance.
  • An explosive-driven ferroelectric generator (EDFEG) was used as the primary power supply.
  • A pulse capacitor, inductor, and electrical exploding opening switch (EEOS) were integrated to generate a high-voltage pulse across an x-ray diode.

Main Results:

  • A high-voltage fast pulse with a peak of 180 kV, 2.8 ns rise time, and 30 ns width was generated.
  • An x-ray pulse with a 19 ns width, 1 mm focus, and 100 mR dose at 15 cm was achieved.
  • The system demonstrated successful operation as a portable flash x-ray source.

Conclusions:

  • The explosive-driven ferroelectric generator (EDFEG) is a viable compact pulsed power source for portable flash x-ray generators.
  • The prototype system successfully generated high-voltage and x-ray pulses with desirable characteristics.
  • This technology shows promise for compact and portable x-ray applications.