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Related Experiment Videos

A new effective thermoluminescent material: LiCaAlF6:Ce.

A Gektin1, S Neicheva, N Shiran

  • 1Institute for Single Crystals, Kharkov, Ukraine. shiran@isc.kharkov.com

Radiation Protection Dosimetry
|October 18, 2002
PubMed
Summary

Pure and Ce-doped LiCaAlF6 crystals were studied for luminescence. Ce-containing samples showed strong UV thermoluminescent signals, indicating potential for thermoluminescent dosimetry applications.

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Area of Science:

  • Solid-state physics
  • Materials science
  • Luminescence and spectroscopy

Background:

  • Lithium calcium aluminum fluoride (LiCaAlF6) is a well-established crystal for UV laser applications.
  • Understanding the luminescence properties of doped and irradiated crystals is crucial for developing new materials.
  • Thermoluminescence (TL) is a sensitive technique for detecting absorbed radiation dose.

Purpose of the Study:

  • To investigate the absorption, emission, and thermoluminescent properties of pure and Ce-doped LiCaAlF6 crystals.
  • To evaluate the potential of LiCaAlF6:Ce as a thermoluminescent dosimetric material.
  • To analyze the effect of X-ray irradiation on the luminescence characteristics.

Main Methods:

  • Optical spectroscopy (absorption and emission) was employed.

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  • Thermostimulated luminescence (TSL) measurements were performed on as-grown and irradiated samples.
  • Crystals were doped with Cerium (Ce) and subjected to X-ray irradiation.

    • Main Results:

    • Ce-doped LiCaAlF6 crystals exhibited intense thermoluminescent signals in the UV region (280-310 nm).
    • A prominent TSL peak was observed at approximately 350 degrees C for Ce-containing samples.
    • Irradiation effects on luminescence were observed, highlighting the material's sensitivity.

    Conclusions:

    • LiCaAlF6:Ce crystals demonstrate promising characteristics for thermoluminescent dosimetry.
    • The observed UV emission and TSL peak suggest suitability for specific radiation detection applications.
    • Further research is warranted to fully explore the dosimetric potential of this material.