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Tellurate-doped scintillation optical fiber and preparation method thereof

A scintillation fiber and tellurite technology, which is applied in glass manufacturing equipment, manufacturing tools, etc., can solve the problems of inability to meet high-pixel imaging, affecting the light yield of single crystal fiber, and large size, so as to increase the Faraday effect and improve the Light production performance, high density effect

Active Publication Date: 2020-01-31
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Application Information

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Problems solved by technology

However, due to the limitations of the performance of the single crystal material itself and the drawing process, the diameter of the drawn optical fiber is at the millimeter level and the size is large, which cannot meet the requirements of high-pixel imaging.
Secondly, during the drawing process, the silica layer coated on the surface of the single crystal is easily fused with the standard silica fiber, causing the silicon atoms in the cladding to penetrate into the single crystal, thereby affecting the light yield of the single crystal fiber.

Method used

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  • Tellurate-doped scintillation optical fiber and preparation method thereof
  • Tellurate-doped scintillation optical fiber and preparation method thereof
  • Tellurate-doped scintillation optical fiber and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A tellurate-doped scintillation optical fiber, comprising a core and a cladding covering the outside of the core, the composition of the core is 6 Li 0.2 : Ce 0.2 Lu 2 B 0.2 PbTeSi 2 o 8 (m=0.5, n=0.5), the cladding composition is 0.85TeO 2 0.14PbO0.01B 2 o 3 (x=0.85, y=0.14, z=0.01). The scintillation fiber is prepared by the following method:

[0027] S1: Weigh TeO with a molar ratio of 0.68:0.10:0.01:0.02:0.02:0.26 2 , PbO, B 2 o 3 、Ce 2 (C 2 o 4 ) 3 , Li 2 CO 3 and LSO, heated to 900°C for melting, and kept for 180 minutes to obtain the material used to prepare the fiber core 6 Li 0.2 : Ce 0.2 Lu 2 B 0.2 PbTeSi 2 o 8 :

[0028] S2: Weigh TeO in proportion 2 、PO 2 and B 2 o 3 , heated to 600-650°C for melting, and kept for 180 minutes to obtain the material 0.85TeO 2 0.14PbO0.01B 2 o 3 ;

[0029] S3: will 6 Li 0.2 : Ce 0.2 Lu 2 B 0.2 PbTeSi 2 o 8 The static material is cut into a cylindrical rod as the core, and the core is coa...

Embodiment 2

[0032] A tellurate-doped scintillation optical fiber, comprising a core and a cladding covering the outside of the core, the composition of the core is 6 Li 0.2 : Ce 0.2 Lu 2 B 0.2 PbTe 2 Si 2 o 10 (m=0.5, n=1), the cladding composition is 0.8TeO 2 0.13PbO0.02B 2 o 3 (x=0.8, y=0.13, z=0.02). The scintillation fiber is prepared by the following method:

[0033] S1: Weigh TeO with a molar ratio of 0.58:0.20:0.01:0.02:0.02:0.26 2 , PbO, B 2 o 3 、Ce 2 (C 2 o 4 ) 3 , Li 2 CO 3 and LSO, heated to 950°C for melting, and kept for 180 minutes to obtain the material used to prepare the fiber core 6 Li 0.2 : Ce 0.2 Lu 2 B 0.2 PbTe 2 Si 2 o 10 :

[0034] S2: Weigh TeO in proportion 2 、PO 2 and B 2 o 3 , heated to 600-650°C for melting, and kept for 180 minutes to obtain the material 0.8TeO 2 0.13PbO0.02B 2 o 3 ;

[0035] S3: will 6 Li 0.2 : Ce 0.2 Lu 2 B 0.2 PbTe 2 Si 2 o 10 The static material is cut into a cylindrical rod as the core, and the c...

Embodiment 3

[0038] A tellurate-doped scintillation optical fiber, comprising a core and a cladding covering the outside of the core, the composition of the core is 6 Li 0.1 : Ce 0.1 LuB 0.1 PbTeSiO 4 (m=1, n=1), the cladding composition is 0.8TeO 2 0.14PbO0.01B 2 o 3 (x=0.8, y=0.14, z=0.01). The scintillation fiber is prepared by the following method:

[0039] S1: Weigh TeO with a molar ratio of 0.63:0.15:0.01:0.02:0.02:0.26 2 , PbO, B 2 o 3 、Ce 2 (C 2 o 4 ) 3 , Li 2 CO 3 and LSO, heated to 900°C for melting, and kept for 180 minutes to obtain the material used to prepare the fiber core 6 Li 0.1 : Ce 0.1 LuB 0.1 PbTeSiO 4 :

[0040] S2: Weigh TeO in proportion 2 、PO 2 and B 2 o 3 , heated to 600-650°C for melting, and kept for 180 minutes to obtain the material 0.8TeO 2 0.14PbO0.01B 2 o 3 ;

[0041] S3: will 6 Li 0.1 : Ce 0.1 LuB 0.1 PbTeSiO 4 The static material is cut into a cylindrical rod as the core, and the core is coated with 0.8TeO 2 0.14PbO0.01B...

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Abstract

The invention provides a tellurate doped scintillation optical fiber and a preparation method thereof. Through the processes of tellurate doping and heat treatment, the temperature independence and the Faraday effect of tellurate can be further improved, so the light production capability of a fiber core is effective improve; meanwhile, a tellurate glass material which does not contain silicon andyttrium aluminum garnet is used as a cladding, so the tensile property can be effectively improved, and silicon dioxide can be prevented from permeating into the fiber core to influence the light production capability, which enables the light production performance of the fiber core is improved from the side. The scintillation optical fiber has the advantages of good tensile properties, strong light production capability, fast attenuation, high density and the like, can improve energy resolution and highly absorb ray energy, and has a light yield up to 20,000 Photon / MeV; meanwhile, the fibercore can be stretched until the diameter of the fiber core reaches 10-100 microns, and the spatial resolution of the fiber core after stretching can reach 30 lp / mm, so different imaging requirements can be met; and the tellurate doped scintillation optical fiber can be applied to the fields of high-energy physical nuclear detection, radiological medicine and the like.

Description

technical field [0001] The invention belongs to the technical field of scintillation materials, in particular to a tellurate-doped scintillation optical fiber for testing neutrons and a preparation method thereof. Background technique [0002] As the most important photosensor material in radiation detection systems, scintillation materials have been widely used in high-energy physics, nuclear physics, astrophysics, geophysics, medical imaging, industrial flaw detection and safety detection in recent years. Under the excitation of radiation, the valence bonds or electron-hole pairs in scintillation materials will change to generate photons, and the energy or dose of radiation can be quantified to realize anti-electromagnetic interference, passive, safe and reliable radiation sensing. As a new type of scintillation material, scintillation optical fiber can realize long-distance and real-time monitoring, can work in harsh environments, has stronger resistance to electromagneti...

Claims

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Application Information

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IPC IPC(8): C03C13/04C03B37/023
CPCC03B37/023C03C13/046
Inventor 尹士玉王昊郭红阳
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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