Terbium-doped calcium sodium phosphate glass ceramic photostimulated luminescence material and preparation method thereof

A light-excited luminescence, sodium calcium phosphate technology, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of unstable OSL performance, increased production cost, harsh C crystal growth conditions, etc., and achieve excellent physical and Chemical properties, ease of production, good dose-response linearity

Inactive Publication Date: 2019-03-08
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] al 2 o 3 :C crystals are prepared by the pulling method in a highly reducing atmosphere. Although this crystal growth method can obtain excellent materials required for dosimetry measurements, Al 2 o 3 :C crystal growth conditions are harsh, making its production cost increase accordingly, and slight changes in the growth environment will have significant changes in its performance, making OSL performance unstable

Method used

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  • Terbium-doped calcium sodium phosphate glass ceramic photostimulated luminescence material and preparation method thereof
  • Terbium-doped calcium sodium phosphate glass ceramic photostimulated luminescence material and preparation method thereof
  • Terbium-doped calcium sodium phosphate glass ceramic photostimulated luminescence material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0024] a. According to the general formula of terbium-doped sodium calcium phosphate glass ceramic material 25Na 2 O-23CaO-6P 2 o 5 -44B 2 o 3 -2ZrO 2 -xTb 4 o 7 , in the formula: x=0.1-1, accurately weigh raw material sodium carbonate 13.25g (0.125mol), calcium carbonate 11.5g (0.115mol), ammonium dihydrogen phosphate 6.9g (0.06mol), boron oxide 15.3168 with precision analytical balance g (0.22mol), 1.2322g (0.01mol) of zirconia, and 0.3739g (0.0005mol) of terbium oxide, put them in an agate mortar and grind them fully for about 6 hours to obtain a mixed material;

[0025] b. Put the mixed material obtained in step a into a corundum crucible, put it into a high-temperature tube furnace, raise the temperature from room temperature to 500°C at a rate of 5°C / min, keep it warm for 60min, and then raise the temperature to 1250°C at a rate of 2°C / min ℃, keep warm for 100min, and sinter at constant temperature to obtain molten glass;

[0026] c. Pour the molten glass obtaine...

Embodiment 2

[0031] a. According to the general formula 25Na of terbium-doped sodium calcium phosphate glass ceramic material 2 O-23CaO-6P 2 o 5 -44B 2 o 3 -2ZrO 2 -xTb 4 o 7 , in the formula: x=0.1-1, accurately weigh raw material sodium carbonate 13.25g (0.125mol), calcium carbonate 11.5g (0.115mol), ammonium dihydrogen phosphate 6.9g (0.06mol), boron oxide 15.3168 with precision analytical balance g (0.22mol), 1.2322g (0.01mol) of zirconia, and 0.9347g (0.00125mol) of terbium oxide, put them into an agate mortar and grind them fully for about 6 hours to obtain a mixed material;

[0032] b. Put the obtained mixed material into a corundum crucible, put it into a high-temperature tube furnace, raise the temperature from room temperature to 500°C at a rate of 5°C / min and keep it for 60 minutes, and then raise the temperature to 1250°C at a rate of 2°C / min. Insulate for 100 minutes, sinter at a constant temperature to obtain molten glass;

[0033] c. Pour the molten glass obtained in...

Embodiment 3

[0038] a. According to the general formula 25Na of terbium-doped sodium calcium phosphate glass ceramic material 2 O-23CaO-6P 2 o 5 -44B 2 o 3 -2ZrO 2 -xTb 4 o 7 , in the formula: x=0.1-1, accurately weigh raw material sodium carbonate 13.25g (0.125mol), calcium carbonate 11.5g (0.115mol), ammonium dihydrogen phosphate 6.9g (0.06mol), boron oxide 15.3168 with precision analytical balance g (0.22mol), 1.2322g (0.01mol) of zirconia, and 1.8693g (0.0025mol) of terbium oxide were put into an agate mortar and ground for about 6 hours to obtain a mixed material;

[0039] b. Put the obtained mixture into a corundum crucible, put it into a high-temperature tube furnace, raise the temperature from room temperature to 500°C at a rate of 5°C / min, keep it warm for 60 minutes, and then raise the temperature to 1250°C at a rate of 2°C / min. Insulate for 100 minutes, sinter at a constant temperature to obtain molten glass;

[0040] c. Pour the molten glass obtained in step b into a st...

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Abstract

The invention relates to a preparation method of a terbium-doped calcium sodium phosphate glass ceramic photostimulated luminescence material. The general formula of the material is 25Na2O-23CaO-6P2O5-44B2O3-2ZrO2-xTb4O7, wherein in the formula, x=0.1-1. The method comprises the following steps: sodium carbonate, calcium carbonate, ammonium dihydrogen phosphate, boron oxide, zirconium oxide and terbium oxide are taken as raw materials, mixed sufficiently and pre-sintered, obtained molten glass is quickly poured into a stainless steel mold, calcium sodium phosphate glass is prepared, ground into powder, annealed and pressed into round sheets, the round sheets are placed into a muffle furnace for heat treatment, NaCaPO4 crystals are separated out from the glass, and the terbium-doped calciumsodium phosphate glass ceramic photostimulated luminescence material is obtained. The material has good optical properties, high sensitivity and wide dose response range (0.01-1000 Gy), can be applied to personal dosimeters, environmental dosimeters, medical dosimeters and the like and is an ideal photostimulated luminescence material for detecting radiation dose.

Description

technical field [0001] The invention relates to a light-excited luminescent material, in particular to a terbium-doped calcium sodium phosphate glass ceramic light-excited luminescent material with a general formula of 25Na 2 O-23CaO-6P 2 o 5 -44B 2 o 3 -2ZrO 2 -xTb 4 o 7 , where: x=0.1-1. Background technique [0002] The radiation dose detection method is a new type of radiation dose measurement method that has emerged in recent years by using the characteristic that the intensity of fluorescence emitted by light-excited luminescent materials is proportional to the radiation dose after being excited by light. In the field of radiation dosimetry, H.O.Albrecht and C.E.Mandeville first discovered the phenomenon of optically stimulated luminescence (OSL). In 1965, they proved that a BeO sample exposed to X-rays by light stimulation with a wavelength of 410nm can make the sample emit ultraviolet light. They attribute this phenomenon to the presence of doubly occupied el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/02C03C6/00C03C4/12C03B19/06
CPCC03B19/06C03C1/00C03C4/12C03C10/00
Inventor 陈朝阳徐杰范艳伟阙慧颖何承发
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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