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Keywords:

  • radiation detector;
  • scintillator;
  • eutectics;
  • phase separation;
  • light-guiding
Thumbnail image of graphical abstract

Alkali halide systems that function as phase-separated scintillators (PSSs) with light-guiding properties are sucessfully created. Furthermore, it is the matrix phases of the PSSs which display the light-guiding properties. CsI–NaCl:Tl is a practical material pair because of its high pixel light output and good spatial resolution.