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Sub-kilohertz flash X-ray generator utilising a glass-enclosed cold-cathode triode

E Sato1, K Takahashi, M Sagae

  • 1Department of Physics, Iwate Medical University, Morioka, Japan.

Medical & Biological Engineering & Computing
|May 1, 1994
PubMed
Summary

This study details a new sub-kilohertz X-ray generator for low-dose rate flash X-rays. The device achieves high-intensity, microsecond pulses, enabling high-speed radiography applications.

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Area of Science:

  • Medical Imaging
  • Physics
  • Engineering

Background:

  • Flash X-ray generation is crucial for high-speed imaging.
  • Existing generators may have limitations in repetition rate or dose control.
  • Development of novel X-ray sources is needed for advanced applications.

Purpose of the Study:

  • To construct and study a novel sub-kilohertz X-ray generator.
  • To achieve low-dose rate flash X-ray production.
  • To evaluate the generator's performance for high-speed radiography.

Main Methods:

  • Designed and built a glass-enclosed cold-cathode triode X-ray tube.
  • Utilized a coaxial condenser charged up to 60 kV for energy storage.
  • Employed a negative high-voltage pulse on a trigger electrode for repetitive discharge.

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  • Measured X-ray duration, intensity, and repetition rate.

    • Main Results:

    • The generator produced X-rays with durations of approximately 1 microsecond.
    • X-ray intensity reached about 0.47 microC kg-1 at 0.5 m per pulse (at 60 kV charged voltage).
    • Maximum repetition rate achieved was approximately 0.4 kHz.
    • High-speed radiography was successfully performed.

    Conclusions:

    • The constructed sub-kilohertz X-ray generator is capable of producing low-dose rate flash X-rays.
    • The device demonstrates potential for applications requiring high-speed imaging.
    • Further studies can explore optimization for specific radiography tasks.