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Related Experiment Videos

Fast multigrid fluorescent ion chamber with 0.1 ms time response.

Motohiro Suzuki1, Naomi Kawamura, Farrel W Lytle

  • 1SPring-8/JASRI, 1-1-1 Kouto, Sayo, Mikazuki, Hyogo 679-5198, Japan. m-suzuki@spring8.or.jp

Journal of Synchrotron Radiation
|March 2, 2002
PubMed
Summary

A novel 17-grid ion chamber detector offers a significantly faster response time for fluorescent X-ray detection. This advancement improves detection speed by over ten times compared to existing technologies.

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Area of Science:

  • Physics
  • Instrumentation
  • Medical Imaging

Background:

  • X-ray detection is crucial for various scientific and medical applications.
  • Existing ion chamber detectors often face limitations in time response, hindering real-time analysis.
  • Fluorescent X-rays require highly sensitive and rapid detection methods.

Purpose of the Study:

  • To develop a novel multigrid ion chamber with enhanced time response for fluorescent X-ray detection.
  • To improve upon the performance of existing ion chamber detectors.
  • To enable high-frequency X-ray detection applications.

Main Methods:

  • Designed and constructed a 17-grid ion chamber with closely spaced grids.
  • Employed a specific grid configuration to optimize time response and detection efficiency.

Related Experiment Videos

  • Measured the rise/fall response time using cyclic X-rays at various applied voltages.

    • Main Results:

    • Achieved a measured rise/fall response time of 0.13 ms at 500 V, over ten times faster than a three-grid ion chamber.
    • Demonstrated stable detector operation without discharge at the optimal voltage.
    • Confirmed a practical amplitude response up to a frequency range of 1 kHz.

    Conclusions:

    • The developed 17-grid ion chamber provides a substantial improvement in time response for fluorescent X-ray detection.
    • This detector is suitable for high-frequency applications requiring rapid X-ray signal acquisition.
    • The design offers a promising alternative for advanced X-ray imaging and spectroscopy.