CN104371711B - X-ray detection flash luminous material that a kind of divalent europium activates and preparation method thereof - Google Patents
X-ray detection flash luminous material that a kind of divalent europium activates and preparation method thereof Download PDFInfo
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- CN104371711B CN104371711B CN201410703108.7A CN201410703108A CN104371711B CN 104371711 B CN104371711 B CN 104371711B CN 201410703108 A CN201410703108 A CN 201410703108A CN 104371711 B CN104371711 B CN 104371711B
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- 239000000463 material Substances 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 title claims abstract description 6
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 229910052693 Europium Inorganic materials 0.000 title abstract description 6
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 title abstract description 6
- 150000002500 ions Chemical class 0.000 claims abstract description 4
- 229910001420 alkaline earth metal ion Inorganic materials 0.000 claims abstract description 3
- 239000002019 doping agent Substances 0.000 claims abstract description 3
- 229910016036 BaF 2 Inorganic materials 0.000 abstract description 5
- 230000005284 excitation Effects 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- 230000004913 activation Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000003836 solid-state method Methods 0.000 abstract description 2
- 238000003786 synthesis reaction Methods 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 74
- 238000000227 grinding Methods 0.000 description 55
- 239000002994 raw material Substances 0.000 description 38
- 239000000395 magnesium oxide Substances 0.000 description 37
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 37
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 37
- 239000004570 mortar (masonry) Substances 0.000 description 37
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 36
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 36
- 229910002091 carbon monoxide Inorganic materials 0.000 description 36
- 238000001816 cooling Methods 0.000 description 36
- 229910052593 corundum Inorganic materials 0.000 description 36
- 239000010431 corundum Substances 0.000 description 36
- 239000000377 silicon dioxide Substances 0.000 description 19
- 235000012239 silicon dioxide Nutrition 0.000 description 19
- 229960001866 silicon dioxide Drugs 0.000 description 19
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 18
- 229910004298 SiO 2 Inorganic materials 0.000 description 18
- 239000003795 chemical substances by application Substances 0.000 description 18
- 229960000935 dehydrated alcohol Drugs 0.000 description 18
- 239000006185 dispersion Substances 0.000 description 18
- AEBZCFFCDTZXHP-UHFFFAOYSA-N europium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Eu+3].[Eu+3] AEBZCFFCDTZXHP-UHFFFAOYSA-N 0.000 description 18
- -1 rare-earth oxalate Chemical class 0.000 description 4
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 208000019155 Radiation injury Diseases 0.000 description 1
- 150000001337 aliphatic alkines Chemical class 0.000 description 1
- OYLGJCQECKOTOL-UHFFFAOYSA-L barium fluoride Chemical compound [F-].[F-].[Ba+2] OYLGJCQECKOTOL-UHFFFAOYSA-L 0.000 description 1
- 229910001632 barium fluoride Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- ORCSMBGZHYTXOV-UHFFFAOYSA-N bismuth;germanium;dodecahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.[Ge].[Ge].[Ge].[Bi].[Bi].[Bi].[Bi] ORCSMBGZHYTXOV-UHFFFAOYSA-N 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 229910001960 metal nitrate Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 235000007715 potassium iodide Nutrition 0.000 description 1
- 229960004839 potassium iodide Drugs 0.000 description 1
- 238000006862 quantum yield reaction Methods 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- OGWLTJRQYVEDMR-UHFFFAOYSA-F tetramagnesium;tetracarbonate Chemical compound [Mg+2].[Mg+2].[Mg+2].[Mg+2].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O OGWLTJRQYVEDMR-UHFFFAOYSA-F 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 description 1
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- Luminescent Compositions (AREA)
Abstract
The invention discloses X-ray detection flash luminous material of a kind of divalent europium activation and preparation method thereof, its chemical constitution expression is: Ba
2-xeu
xmgSi
2o
7; Active ions are Eu
2+, x is dopant ion Eu
2+relative alkaline-earth metal ions Ba
2+shared molar percentage coefficient, span 0.001≤x≤0.90.Flash luminous material in the present invention adopts high temperature solid-state method synthesis, and preparation technology is simple, and operational safety, condition easily controls.Its wavelength of fluorescence sent is in 425-725nm scope, and the strongest emission peak is positioned at ~ 517nm; Under excitation of X-rays, the sample photoyield obtained during x=0.07 is 29145ph/Mev, reaches business BaF
2three times and more than; And fluorescence decay is fast, is about 0.75 μ s; In atmosphere can stable existence, not easily deliquescence.
Description
Technical field
The present invention relates to X-ray detection flash luminous material of a kind of divalent europium activation and preparation method thereof.
Background technology
Flash luminous material, after X-ray, gamma-rays or other energetic ray radiation, can absorb part energy and be converted to visible ray.Under specific high-energy radiation, the photon that scintillation material is launched is The more the better, and advantage is to improve detectable signal accuracy, thus the radiation injury that human body is subject to reduces.It should be noted that the operating frequency in order to increase detector, also requiring that the fluorescence decay time of scintillation material is short as far as possible.The flash luminous material used at present mainly contains mixes thallium potassiumiodide (NaI:TI), plumbous tungstate (PbWO
4), barium fluoride (BaF
2), bismuth germanium oxide (Bi
4ge
3o
12) etc., but these materials have weak point.As little in NaI:TI uptake factor, there is serious afterglow issues, easy deliquescence; PbWO
4luminous efficiency low; BaF
2diminution factor large; Bi
4ge
3o
12twilight sunset is long, and light productive rate is low.Therefore, studying new high-performance scintillation material is very promising problem.
Eu
2+luminescence relates to the 5d-4f transition that parity allows, and luminous strong, quantum yield is high, fluorescence decay fast (hundreds of nanosecond).Alkaline-earth metal pyrosilicate in atmosphere can stable existence, and is used as the relevant report of flash luminous material there are no the alkaline-earth metal pyrosilicate mixing divalent europium.
Summary of the invention
The object of the present invention is to provide that a kind of photoyield is high, fluorescence decay soon, the X-ray detection flash luminous material that activates of not deliquescent divalent europium.
Another object of the present invention is to provide the preparation method of above-mentioned luminescent material.
Flash luminous material of the present invention, its chemical constitution expression formula is: Ba
2-xeu
xmgSi
2o
7; X is dopant ion Eu
2+relative alkaline-earth metal ions Ba
2+shared molar percentage coefficient, span 0.001≤x≤0.90.
The preparation method of above-mentioned luminescent material comprises the steps: to take raw material by chemical constitution expression formula, and mixed in mortar, in reducing atmosphere, pre-burning and sintering, naturally cool to room temperature, and product grinding is just obtained product.
In above-mentioned preparation method, raw material is: one or more the mixture in rare earth oxide, rare-earth oxalate, rare earth carbonate, rare earth nitrate; One or more mixture of alkaline earth metal carbonate, alkine earth metal nitrate; One or more mixture in magnesium oxide, magnesium hydroxide, magnesium basic carbonate; Silicon-dioxide.
In above-mentioned preparation method, it is characterized in that calcined temperature is 800 DEG C, burn-in time is 0.5-2 hour; Sintering temperature is 1100-1300 DEG C, and calcination time is 2-20 hour.In above-mentioned preparation method, reducing atmosphere refers to CO atmosphere, H
2atmosphere, H
2and N
2mixed atmosphere or H
2with Ar mixed atmosphere.
Compared with prior art, the present invention has following beneficial effect: flash luminous material of the present invention adopts high temperature solid-state method synthesis, and preparation technology is simple, operational safety, and condition is easy to control.
The wavelength of fluorescence that flash luminous material of the present invention sends is in 425-725nm scope, and the strongest emission peak is positioned at ~ 517nm; Under excitation of X-rays, the sample photoyield obtained during x=0.07 is 29145ph/Mev, reaches business BaF
2three times and more than.Flash luminous material of the present invention, is about 0.75 μ s; In atmosphere can stable existence, not easily deliquescence.
Accompanying drawing explanation
Fig. 1 is flash luminous material embodiment 4 of the present invention, embodiment 10 and the emmission spectrum of embodiment 13 under excitation of X-rays.
Embodiment
Embodiment 1:
Take barium carbonate (BaCO respectively
3) 1.1834g, magnesium oxide (MgO) 0.1209g, silicon-dioxide (SiO
2) 0.3606g, europium sesquioxide (Eu
2o
3) 0.0005g, above-mentioned raw materials is ground in agate mortar, and add dehydrated alcohol as dispersion agent, load corundum crucible, in 800 DEG C of pre-burnings 2 hours in Carbon monoxide reduction atmosphere after grinding evenly, after naturally cooling to room temperature, raw material is poured out in agate mortar, continues fully grinding, reinstall corundum crucible, in Carbon monoxide reduction atmosphere, sinter 5 hours in 1270 DEG C, after naturally cooling to room temperature, grinding evenly, finally obtains product.
Embodiment 2:
Take barium carbonate (BaCO respectively
3) 1.1822g, magnesium oxide (MgO) 0.1209g, silicon-dioxide (SiO
2) 0.3606g, europium sesquioxide (Eu
2o
3) 0.0016g, above-mentioned raw materials is ground in agate mortar, and add dehydrated alcohol as dispersion agent, load corundum crucible, in 800 DEG C of pre-burnings 2 hours in Carbon monoxide reduction atmosphere after grinding evenly, after naturally cooling to room temperature, raw material is poured out in agate mortar, continues fully grinding, reinstall corundum crucible, in Carbon monoxide reduction atmosphere, sinter 5 hours in 1270 DEG C, after naturally cooling to room temperature, grinding evenly, finally obtains product.
Embodiment 3:
Take barium carbonate (BaCO respectively
3) 1.1811g, magnesium oxide (MgO) 0.1209g, silicon-dioxide (SiO
2) 0.3606g, europium sesquioxide (Eu
2o
3) 0.0026g, above-mentioned raw materials is ground in agate mortar, and add dehydrated alcohol as dispersion agent, load corundum crucible, in 800 DEG C of pre-burnings 2 hours in Carbon monoxide reduction atmosphere after grinding evenly, after naturally cooling to room temperature, raw material is poured out in agate mortar, continues fully grinding, reinstall corundum crucible, in Carbon monoxide reduction atmosphere, sinter 5 hours in 1270 DEG C, after naturally cooling to room temperature, grinding evenly, finally obtains product.
Embodiment 4:
Take barium carbonate (BaCO respectively
3) 1.1781g, magnesium oxide (MgO) 0.1209g, silicon-dioxide (SiO
2) 0.3606g, europium sesquioxide (Eu
2o
3) 0.0053g, above-mentioned raw materials is ground in agate mortar, and add dehydrated alcohol as dispersion agent, load corundum crucible, in 800 DEG C of pre-burnings 2 hours in Carbon monoxide reduction atmosphere after grinding evenly, after naturally cooling to room temperature, raw material is poured out in agate mortar, continues fully grinding, reinstall corundum crucible, in Carbon monoxide reduction atmosphere, sinter 5 hours in 1270 DEG C, after naturally cooling to room temperature, grinding evenly, finally obtains product.
Embodiment 5:
Take barium carbonate (BaCO respectively
3) 1.1722g, magnesium oxide (MgO) 0.1209g, silicon-dioxide (SiO
2) 0.3606g, europium sesquioxide (Eu
2o
3) 0.0106g, above-mentioned raw materials is ground in agate mortar, and add dehydrated alcohol as dispersion agent, load corundum crucible, in 800 DEG C of pre-burnings 2 hours in Carbon monoxide reduction atmosphere after grinding evenly, after naturally cooling to room temperature, raw material is poured out in agate mortar, continues fully grinding, reinstall corundum crucible, in Carbon monoxide reduction atmosphere, sinter 5 hours in 1270 DEG C, after naturally cooling to room temperature, grinding evenly, finally obtains product.
Embodiment 6:
Take barium carbonate (BaCO respectively
3) 1.1663g, magnesium oxide (MgO) 0.1209g, silicon-dioxide (SiO
2) 0.3606g, europium sesquioxide (Eu
2o
3) 0.0158g, above-mentioned raw materials is ground in agate mortar, and add dehydrated alcohol as dispersion agent, load corundum crucible, in 800 DEG C of pre-burnings 2 hours in Carbon monoxide reduction atmosphere after grinding evenly, after naturally cooling to room temperature, raw material is poured out in agate mortar, continues fully grinding, reinstall corundum crucible, in Carbon monoxide reduction atmosphere, sinter 5 hours in 1270 DEG C, after naturally cooling to room temperature, grinding evenly, finally obtains product.
Embodiment 7:
Take barium carbonate (BaCO respectively
3) 1.1603g, magnesium oxide (MgO) 0.1209g, silicon-dioxide (SiO
2) 0.3606g, europium sesquioxide (Eu
2o
3) 0.0211g, above-mentioned raw materials is ground in agate mortar, and add dehydrated alcohol as dispersion agent, load corundum crucible, in 800 DEG C of pre-burnings 2 hours in Carbon monoxide reduction atmosphere after grinding evenly, after naturally cooling to room temperature, raw material is poured out in agate mortar, continues fully grinding, reinstall corundum crucible, in Carbon monoxide reduction atmosphere, sinter 5 hours in 1270 DEG C, after naturally cooling to room temperature, grinding evenly, finally obtains product.
Embodiment 8:
Take barium carbonate (BaCO respectively
3) 1.1544g, magnesium oxide (MgO) 0.1209g, silicon-dioxide (SiO
2) 0.3606g, europium sesquioxide (Eu
2o
3) 0.0264g, above-mentioned raw materials is ground in agate mortar, and add dehydrated alcohol as dispersion agent, load corundum crucible, in 800 DEG C of pre-burnings 2 hours in Carbon monoxide reduction atmosphere after grinding evenly, after naturally cooling to room temperature, raw material is poured out in agate mortar, continues fully grinding, reinstall corundum crucible, in Carbon monoxide reduction atmosphere, sinter 5 hours in 1270 DEG C, after naturally cooling to room temperature, grinding evenly, finally obtains product.
Embodiment 9:
Take barium carbonate (BaCO respectively
3) 1.1485g, magnesium oxide (MgO) 0.1209g, silicon-dioxide (SiO
2) 0.3606g, europium sesquioxide (Eu
2o
3) 0.0317g, above-mentioned raw materials is ground in agate mortar, and add dehydrated alcohol as dispersion agent, load corundum crucible, in 800 DEG C of pre-burnings 2 hours in Carbon monoxide reduction atmosphere after grinding evenly, after naturally cooling to room temperature, raw material is poured out in agate mortar, continues fully grinding, reinstall corundum crucible, in Carbon monoxide reduction atmosphere, sinter 5 hours in 1270 DEG C, after naturally cooling to room temperature, grinding evenly, finally obtains product.
Embodiment 10:
Take barium carbonate (BaCO respectively
3) 1.1426g, magnesium oxide (MgO) 0.1209g, silicon-dioxide (SiO
2) 0.3606g, europium sesquioxide (Eu
2o
3) 0.0370g, above-mentioned raw materials is ground in agate mortar, and add dehydrated alcohol as dispersion agent, load corundum crucible, in 800 DEG C of pre-burnings 2 hours in Carbon monoxide reduction atmosphere after grinding evenly, after naturally cooling to room temperature, raw material is poured out in agate mortar, continues fully grinding, reinstall corundum crucible, in Carbon monoxide reduction atmosphere, sinter 5 hours in 1270 DEG C, after naturally cooling to room temperature, grinding evenly, finally obtains product.
Embodiment 11:
Take barium carbonate (BaCO respectively
3) 1.1367g, magnesium oxide (MgO) 0.1209g, silicon-dioxide (SiO
2) 0.3606g, europium sesquioxide (Eu
2o
3) 0.0422g, above-mentioned raw materials is ground in agate mortar, and add dehydrated alcohol as dispersion agent, load corundum crucible, in 800 DEG C of pre-burnings 2 hours in Carbon monoxide reduction atmosphere after grinding evenly, after naturally cooling to room temperature, raw material is poured out in agate mortar, continues fully grinding, reinstall corundum crucible, in Carbon monoxide reduction atmosphere, sinter 5 hours in 1270 DEG C, after naturally cooling to room temperature, grinding evenly, finally obtains product.
Embodiment 12:
Take barium carbonate (BaCO respectively
3) 1.1307g, magnesium oxide (MgO) 0.1209g, silicon-dioxide (SiO
2) 0.3606g, europium sesquioxide (Eu
2o
3) 0.0475g, above-mentioned raw materials is ground in agate mortar, and add dehydrated alcohol as dispersion agent, load corundum crucible, in 800 DEG C of pre-burnings 2 hours in Carbon monoxide reduction atmosphere after grinding evenly, after naturally cooling to room temperature, raw material is poured out in agate mortar, continues fully grinding, reinstall corundum crucible, in Carbon monoxide reduction atmosphere, sinter 5 hours in 1270 DEG C, after naturally cooling to room temperature, grinding evenly, finally obtains product.
Embodiment 13:
Take barium carbonate (BaCO respectively
3) 1.1249g, magnesium oxide (MgO) 0.1209g, silicon-dioxide (SiO
2) 0.3606g, europium sesquioxide (Eu
2o
3) 0.0528g, above-mentioned raw materials is ground in agate mortar, and add dehydrated alcohol as dispersion agent, load corundum crucible, in 800 DEG C of pre-burnings 2 hours in Carbon monoxide reduction atmosphere after grinding evenly, after naturally cooling to room temperature, raw material is poured out in agate mortar, continues fully grinding, reinstall corundum crucible, in Carbon monoxide reduction atmosphere, sinter 5 hours in 1270 DEG C, after naturally cooling to room temperature, grinding evenly, finally obtains product.
Embodiment 14:
Take barium carbonate (BaCO respectively
3) 1.1130g, magnesium oxide (MgO) 0.1209g, silicon-dioxide (SiO
2) 0.3606g, europium sesquioxide (Eu
2o
3) 0.0633g, above-mentioned raw materials is ground in agate mortar, and add dehydrated alcohol as dispersion agent, load corundum crucible, in 800 DEG C of pre-burnings 2 hours in Carbon monoxide reduction atmosphere after grinding evenly, after naturally cooling to room temperature, raw material is poured out in agate mortar, continues fully grinding, reinstall corundum crucible, in Carbon monoxide reduction atmosphere, sinter 5 hours in 1270 DEG C, after naturally cooling to room temperature, grinding evenly, finally obtains product.
Embodiment 15:
Take barium carbonate (BaCO respectively
3) 1.1011g, magnesium oxide (MgO) 0.1209g, silicon-dioxide (SiO
2) 0.3606g, europium sesquioxide (Eu
2o
3) 0.0739g, above-mentioned raw materials is ground in agate mortar, and add dehydrated alcohol as dispersion agent, load corundum crucible, in 800 DEG C of pre-burnings 2 hours in Carbon monoxide reduction atmosphere after grinding evenly, after naturally cooling to room temperature, raw material is poured out in agate mortar, continues fully grinding, reinstall corundum crucible, in Carbon monoxide reduction atmosphere, sinter 5 hours in 1270 DEG C, after naturally cooling to room temperature, grinding evenly, finally obtains product.
Embodiment 16:
Take barium carbonate (BaCO respectively
3) 1.0952g, magnesium oxide (MgO) 0.1209g, silicon-dioxide (SiO
2) 0.3606g, europium sesquioxide (Eu
2o
3) 0.0792g, above-mentioned raw materials is ground in agate mortar, and add dehydrated alcohol as dispersion agent, load corundum crucible, in 800 DEG C of pre-burnings 2 hours in Carbon monoxide reduction atmosphere after grinding evenly, after naturally cooling to room temperature, raw material is poured out in agate mortar, continues fully grinding, reinstall corundum crucible, in Carbon monoxide reduction atmosphere, sinter 5 hours in 1270 DEG C, after naturally cooling to room temperature, grinding evenly, finally obtains product.
Embodiment 17:
Take barium carbonate (BaCO respectively
3) 1.0656g, magnesium oxide (MgO) 0.1209g, silicon-dioxide (SiO
2) 0.3606g, europium sesquioxide (Eu
2o
3) 0.1056g, above-mentioned raw materials is ground in agate mortar, and add dehydrated alcohol as dispersion agent, load corundum crucible, in 800 DEG C of pre-burnings 2 hours in Carbon monoxide reduction atmosphere after grinding evenly, after naturally cooling to room temperature, raw material is poured out in agate mortar, continues fully grinding, reinstall corundum crucible, in Carbon monoxide reduction atmosphere, sinter 5 hours in 1270 DEG C, after naturally cooling to room temperature, grinding evenly, finally obtains product.
Embodiment 20:
Take barium carbonate (BaCO respectively
3) 1.0064g, magnesium oxide (MgO) 0.1209g, silicon-dioxide (SiO
2) 0.3606g, europium sesquioxide (Eu
2o
3) 0.1584g, above-mentioned raw materials is ground in agate mortar, and add dehydrated alcohol as dispersion agent, load corundum crucible, in 800 DEG C of pre-burnings 2 hours in Carbon monoxide reduction atmosphere after grinding evenly, after naturally cooling to room temperature, raw material is poured out in agate mortar, continues fully grinding, reinstall corundum crucible, in Carbon monoxide reduction atmosphere, sinter 5 hours in 1270 DEG C, after naturally cooling to room temperature, grinding evenly, finally obtains product.
Flash luminous material embodiment 4 of the present invention, embodiment 10, embodiment 13 record emmission spectrum under excitation of X-rays, and shown in Figure 1.The wavelength of fluorescence that sample sends in 425-725nm scope, the strongest emission peak be positioned at lay respectively at ~ 512, ~ 517, ~ 518nm, embodiment 10 is 29145ph/Mev for photoyield, reaches business BaF
2three times and more than.
Claims (1)
1.Ba
2-xeu
xmgSi
2o
7as the application in X-ray detection flash luminous material, wherein, x is dopant ion Eu
2+relative alkaline-earth metal ions Ba
2+shared molar percentage coefficient, span 0.001≤x≤0.90.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410703108.7A CN104371711B (en) | 2014-11-29 | 2014-11-29 | X-ray detection flash luminous material that a kind of divalent europium activates and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410703108.7A CN104371711B (en) | 2014-11-29 | 2014-11-29 | X-ray detection flash luminous material that a kind of divalent europium activates and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
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| CN104371711B true CN104371711B (en) | 2016-03-23 |
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