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

doi:10.1016/j.optmat.2006.11.022

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

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	69-71
Number of pages	3
Journal	Optical Materials
Volume	30
Issue number	1
DOIs	https://doi.org/10.1016/j.optmat.2006.11.022
Publication status	Published - 2007 Sept

Keywords

Dosimeter
Eu-doping
LiCaAlF
TSL

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title = "Rare earth doped LiCaAlF6 as a new potential dosimetric material",

abstract = "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.",

keywords = "Dosimeter, Eu-doping, LiCaAlF, TSL",

author = "{Di Martino}, Daniela and Anna Vedda and Cinzia Montanari and Emanuela Rosetta and Eva Mihokova and Martin Nikl and Hiroki Sato and Akira Yoshikawa and Tsuguo Fukuda",

note = "Funding Information: Financial support of Czech Institutional Research Plan No. AVOZ10100521 and MSMT, KONTAKT project ME871 are gratefully acknowledged.",

year = "2007",

month = sep,

doi = "10.1016/j.optmat.2006.11.022",

language = "English",

volume = "30",

pages = "69--71",

journal = "Optical Materials",

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T1 - Rare earth doped LiCaAlF6 as a new potential dosimetric material

AU - Di Martino, Daniela

AU - Vedda, Anna

AU - Montanari, Cinzia

AU - Rosetta, Emanuela

AU - Mihokova, Eva

AU - Nikl, Martin

AU - Sato, Hiroki

AU - Yoshikawa, Akira

AU - Fukuda, Tsuguo

N1 - Funding Information: Financial support of Czech Institutional Research Plan No. AVOZ10100521 and MSMT, KONTAKT project ME871 are gratefully acknowledged.

PY - 2007/9

Y1 - 2007/9

N2 - 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.

AB - 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.

KW - Dosimeter

KW - Eu-doping

KW - LiCaAlF

KW - TSL

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VL - 30

SP - 69

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JO - Optical Materials

JF - Optical Materials

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ER -

Rare earth doped LiCaAlF₆ as a new potential dosimetric material

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Keywords

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