Scintillation Crystal Mg4Ta2O9 and Its Doping Modification for Container Security Applications

Abstract

Abstract: The decay time of magnesium tantalate (Mg₄Ta₂O₉) crystal is shorter than that of CdWO₄ crystal, and its light yield and energy resolution are slightly higher than that of CdWO₄ crystal respectively. Its afterglow is 0.01%/3 ms as low as that of CdWO₄. In addition, the Mg₄Ta₂O₉ crystal has no toxic elements, and will be one of the best candidate materials in the field of container security inspection for replacing CdWO₄ crystal which containing toxic element Cd. The research progresses in the structural properties, crystal growth, scintillation properties and doping modification of Mg₄Ta₂O₉ crystals are reviewed. The research show that Mg₄Ta₂O₉ doping with Zn²⁺ or Nb⁵⁺ ions can significantly increase its light yield.

Key words: magnesium tantalite crystal, Mg₄Ta₂O₉, scintillation crystal, micro-pulling-down method, optical floating-zone method, doping

CLC Number:

O734

MA Yunfeng, XU Jiayue, JIANG Yijian, BOURRET-COURCHESNE Edith. Scintillation Crystal Mg₄Ta₂O₉ and Its Doping Modification for Container Security Applications[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2021, 50(10): 1870-1878.

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Scintillation Crystal Mg₄Ta₂O₉ and Its Doping Modification for Container Security Applications

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