MONOCRYSTALLINE MATERIAL FOR SOLID STATE DOSIMETRY Russian patent published in 2021 - IPC C30B29/12 C30B17/00 C09K11/55 C09K11/61 C09K11/63 G01T1/11 G01T1/202 

FIELD: thermodosimetric devices materials.

SUBSTANCE: invention relates to materials for thermodosimetric devices that can be used as solid-state thermoluminescent detectors of ionizing radiation. A monocrystalline material for solid-state dosimetry - fluoride borate with an "anti-zeolite" structure - is characterized by the general formula Ba₁₂(BO₃)₆[BO₃][LiF₄]:Cu,Sr in the form of a framework [(Ba,Sr)₁₂(ВО₃)₆]⁶⁺ folded alternating layers of ABAB along the direction of the crystallographic axis Z, while the A-layers of the "antzeolite" structure include guest (ВО₃)^3- and (F₂)^2- groups, B-layers include guest anionic groups [LiF₄]^3-, [(Cu,Sr)²⁺(OH)₆]^4-, [Cu⁺F/(OH)4]^3-, and simultaneously contains copper and strontium ions, which provide a shift in the position of the main dosimetric peak to a higher temperature region up to 437 K.

EFFECT: expansion of the arsenal of monocrystalline thermoluminescent materials with stable trapping centers based on cuprous ions and hole centers on oxygen, as well as radiative recombination based on cuprous ions. A shift to a high temperature region and an increase in the temperature interval between peaks are important for stable storage and reading of dosimetry information. Another important advantage of crystals is their chemical, physical and radiation resistance.

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