Rare earth doped LiCaAlF6 as a new potential dosimetric material

Daniela Di Martino, Anna Vedda, Cinzia Montanari, Emanuela Rosetta, Eva Mihokova, Martin Nikl, Hiroki Sato, Akira Yoshikawa, Tsuguo Fukuda

研究成果: Article査読

20 被引用数 (Scopus)

抄録

LiCaAlF6 (LiCAF) crystals doped with two different rare earth (RE) ions (europium and cerium) have been investigated as potential new dosimetric materials. Thermally stimulated luminescence (TSL) measurements have been carried out and a quantitative comparison has been performed with a standard LiF dosimetric material. Wavelength-resolved TSL measurements have revealed that the TSL spectrum is dominated by RE-related emissions with no significant contributions from defect centers. The glow curve of LiCAF:Eu displays a dosimetric peak at about 240 °C with a good linearity versus imparted dose. Specifically, the material appears more sensitive than LiF at doses lower than 100 mGy (with a sensitivity limit of 10-5 Gy). Concerning LiCAF:Ce, the glow curve is more complicated, dose memory effects appear and no peaks with good dosimetric properties are found. Therefore, LiCAF:Eu seems to be more promising in the search for a new dosimetric material.

本文言語English
ページ(範囲)69-71
ページ数3
ジャーナルOptical Materials
30
1
DOI
出版ステータスPublished - 2007 9

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 原子分子物理学および光学
  • 分光学
  • 物理化学および理論化学
  • 有機化学
  • 無機化学
  • 電子工学および電気工学

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