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Researchers measured the sensitivity of Fuji image plates (IPs) for X-ray spectrometers. Sensitivity varied by up to 5% with scanner settings, highlighting the need for cross-calibration between facilities.

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Area of Science:

  • Nuclear Physics
  • Materials Science
  • Spectroscopy

Background:

  • Fuji SR and MS image plates (IPs) are crucial detectors in X-ray spectrometers.
  • Accurate sensitivity calibration is essential for quantitative analysis in high-energy physics experiments.

Purpose of the Study:

  • To quantify the sensitivity of Fuji SR and MS image plates (IPs) across a broad X-ray energy range.
  • To investigate the impact of scanner settings and pixel size on IP sensitivity.
  • To assess the fading properties of MS-type image plates.

Main Methods:

  • Measured IP sensitivity using radioisotopes (6-60 keV) and a Manson source (1.5-8 keV).
  • Systematically examined IP sensitivity variations with scanner settings and pixel size.
  • Evaluated MS-type IP fading over extended periods.

Main Results:

  • IP sensitivity showed variations of approximately 5% for specific types and scanner settings.
  • IP sensitivity varied by up to a factor of 2 depending on IP type and scanner parameters.
  • Radioisotope technique provided insights into MS-type IP fading characteristics.

Conclusions:

  • Cross-calibration of image plate scanners across different facilities is essential.
  • A consistent absolute sensitivity curve from 2-60 keV requires inter-facility calibration.
  • Understanding IP sensitivity variations is critical for accurate X-ray spectroscopy data.