CN113372004B - Borate scintillation microcrystalline glass and preparation method and application thereof - Google Patents

Abstract

The invention discloses a borate scintillation glass-ceramic as well as its preparation method and application. The chemical composition expression of the borate scintillation glass-ceramics of the present invention is Li ₂ B ₄ O ₇ -(Mg _1-x Zn _x ) ₄ (Ta _1-y Nb _y ) ₂ O ₉ , wherein, 0≤x≤ 1, 0≤y≤1, the doping ratio of the microcrystalline phase (Mg _1‑x Zn _x ) ₄ (Ta _1‑y Nb _y ) ₂ O ₉ is 1-20 wt%. The scintillating light-emitting material in the present invention is synthesized by a high-temperature solid-phase method, exists stably in the air, has safe and simple process, and is easy to control. The scintillation glass-ceramic of the present invention has a light yield of 948-3606ph/MeV under X-ray excitation. Among them, Li ₂ B ₄ O ₇ ‑15wt% (Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ has the highest light yield, which is 45.1% of BGO crystal.

Description

A borate scintillation glass-ceramic and its preparation method and application

technical field

The invention relates to a borate scintillation glass-ceramic, a preparation method and application thereof, and belongs to the technical field of scintillation glass.

Background technique

Scintillator is a kind of energy conversion luminescent material with scintillation and luminescent properties. It can emit light in the ultraviolet or visible region under the irradiation of various ionizing radiation and high-energy particles, and it can be combined with various photomultiplier tubes, charge-coupled devices and photoelectric The combination of diodes enables the detection, screening and quantitative analysis of various ionizing radiation and high-energy particles. Scintillators are widely used in high-energy physics experiments, nuclear medical imaging, industrial non-destructive testing, safety inspections, environmental monitoring and exploration, and astronomical observations. From the earliest discovered CdWO ₄ to the commercially applied CsI:Tl and Bi ₄ Ge ₃ O ₁₂ (BGO) scintillation single crystals, the types of scintillators have been continuously expanded and enriched, mainly including single crystals, transparent ceramics, glass, high Molecules, quantum dots, gases and various composite materials, etc. The common requirements of scintillators mainly include high light yield, fast decay, excellent ray cutoff ability, stable physical and chemical properties, radiation resistance and high energy resolution. Glass scintillator is a very important class of scintillator materials. In addition to having the common characteristics of scintillator, it has obvious advantages in high doping, large-scale preparation and optical fiberization. As a metastable material, glass can obtain nanoscale microcrystalline phase in glass by heat treatment, because the size of crystal particles is smaller than the wavelength of visible light, which can avoid light scattering caused by crystal particles. The scintillation performance can be effectively improved by combining glass with microcrystals. As an important supplement to other scintillator materials such as crystals, organic plastics, and liquids, glass scintillator materials have continuously adjustable component design, simpler large-scale preparation processes, excellent cutting and hot bending processes, and mature fiber drawing processes , has certain advantages in large-volume detectors, fiber optic imaging, position resolution, and micro-area dose detection. Generally speaking, glass as a scintillator still has a lot of potential to be tapped. At present, related research is still in the exploratory stage. How to make use of its advantages to complement other scintillators is the key to the development of glass scintillators.

Patent ZL201810018733.6 discloses an intrinsically luminescent scintillation crystal magnesium tantalate and its preparation method and application. Its chemical formula is Mg ₄ Ta ₂ O ₉ , which belongs to the hexagonal crystal system and has an ilmenite structure. The amount is 16000ph/MeV, which is equivalent to CdWO ₄ crystal, about 30% of the light yield of CsI(Tl) crystal, and the decay time is 5μs, which is better than CdWO ₄ crystal, but longer than CsI(Tl) crystal. The energy resolution is 6.2%, which is higher than CdWO ₄ crystal and comparable to CsI(Tl). The crystal is environmentally friendly, and there is no problem of toxic elements polluting the environment from production, processing, application, and recovery, and has potential application prospects in the aspect of radiographic imaging probes.

Although traditional oxide systems such as silicate and aluminate have good chemical properties, they have low refractive index and high phonon energy. Doping components that can effectively reduce phonon energy and other stabilizers in the borate system can significantly improve the physical and chemical stability of the glass. Luminescent centers usually have large absorption and emission cross-sections in borate glasses, which are favorable for fluorescence emission and energy transfer. At the same time, the borate system glass has the characteristics of high transmittance in the near-infrared and visible light region (400-1400nm), excellent optical properties, stable physical and chemical properties, and low melting temperature. At present, there is no report on the glass scintillator obtained by compound doping borate glass and applied in the field of radiation detection.

Contents of the invention

The technical problem solved by the invention is: how to obtain a scintillation glass-ceramic with high fluorescence emission efficiency.

In order to solve the above technical problems, the present invention provides a borate scintillation glass-ceramic, characterized in that its chemical composition is expressed as Li ₂ B ₄ O ₇ -(Mg _1-x Zn _x ) ₄ (Ta _{1- y} Nb _y ) ₂ O ₉ , where, 0≤x≤1, 0≤y≤1, Li ₂ B ₄ O ₇ is the matrix, (Mg _1-x Zn _x ) ₄ (Ta _1-y Nb _y ) ₂ O ₉ is a microcrystalline phase.

Preferably, the light yield of the borate scintillation glass-ceramics is 948-3606ph/MeV.

Preferably, the doping ratio of the microcrystalline phase (Mg _1-x Zn _x ) ₄ (Ta _1-y Nb _y ) ₂ O ₉ is 1-20wt%.

The present invention also provides the above-mentioned preparation method of borate scintillation glass-ceramics, comprising: weighing Li ₂ B ₄ O ₇ , MgO, Ta ₂ O ₅ and Nb ₂ O ₅ raw materials according to the stoichiometric ratio, Fully grind the raw materials in the bowl, pour the ground raw materials into the corundum crucible, and then put them into the muffle furnace for melting treatment to obtain a uniform glass liquid, and then rapidly cool the glass liquid to obtain the target scintillating glass-ceramic primary product, The scintillating glass-ceramic primary product obtained is processed to obtain the borate scintillating glass-ceramic after cutting, surface grinding and polishing.

Preferably, the grinding time is 60 minutes.

Preferably, the temperature of the melting treatment is 1000-1100° C., and the time is 4-12 hours.

The present invention also provides the application of the above-mentioned borate scintillation glass-ceramics in the detection, screening and quantitative analysis of ionizing radiation and high-energy particles.

Compared with the prior art, the present invention has the following beneficial effects:

1. The scintillation glass-ceramic of the present invention has high-efficiency fluorescence emission efficiency, and Li ₂ B ₄ O ₇ -15wt% (Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ scintillation crystallite with the highest luminous efficiency is measured The fluorescence emission efficiency of glass under X-ray excitation is equivalent to 45% of that of BGO crystal;

2. The scintillation glass-ceramic of the present invention has good structure uniformity, can be cast into various shapes, and is easy to realize large-scale and large-scale industrial production, and can be used in nuclear reactors, particle physics, radiation safety, cosmic ray detection and other fields, and has broad application Application prospects and great practical significance.

Description of drawings

Fig. 1 is the X-ray diffraction figure of the scintillation glass-ceramic prepared by embodiment 1～8;

Fig. 2 is the transmittance spectrogram of the scintillation glass-ceramics prepared in Examples 1-4;

Fig. 3 is the transmittance spectrogram of the scintillation glass-ceramics prepared in Examples 5-8;

Fig. 4 is the emission spectrogram of Li ₂ B ₄ O ₇ -1wt% Mg ₄ Ta ₂ O ₉ scintillation glass ceramics measured under X-ray excitation;

Figure 5 is the emission spectrum of Li ₂ B ₄ O ₇ -1wt%(Mg _0.5 Zn _0.5 ) ₄ Ta ₂ O ₉ scintillation glass-ceramics measured under X-ray excitation;

Fig. 6 is the emission spectrum of Li ₂ B ₄ O ₇ -1wt% Mg ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ scintillation glass ceramics measured under X-ray excitation;

Figure 7 is the emission spectrum of Li ₂ B ₄ O ₇ -1wt%(Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ scintillation glass-ceramics measured under X-ray excitation;

Figure 8 is the emission spectrum of Li ₂ B ₄ O ₇ -5wt%(Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ scintillation glass-ceramics measured under X-ray excitation;

Figure 9 is the emission spectrum of Li ₂ B ₄ O ₇ -10wt%(Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ scintillation glass-ceramics measured under X-ray excitation;

Figure 10 is the emission spectrum of Li ₂ B ₄ O ₇ -15wt% (Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ scintillation glass-ceramics measured under X-ray excitation;

Fig. 11 is the emission spectrum of Li ₂ B ₄ O ₇ -20wt% (Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ scintillation glass-ceramics measured under X-ray excitation.

detailed description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.

Example 1

The preparation method of Li ₂ B ₄ O ₇ -1wt%Mg ₄ Ta ₂ O ₉ (LBO-1wt%MTO) scintillation glass-ceramic comprises the following steps:

Accurately weigh the glass raw materials Li ₂ B ₄ O ₇ , MgO, Ta ₂ O ₅ calculated according to the stoichiometric ratio, fully grind the glass raw materials in an agate mortar for 60 minutes, pour the ground raw materials into a corundum crucible, Put it in a high-temperature muffle furnace at 1000°C for 4 hours to obtain a uniform molten glass, then rapidly cool the molten glass to obtain the target scintillating glass-ceramic, and cut, surface grind and polish the obtained primary scintillating glass-ceramic Post-processing is the scintillating glass-ceramic of the present invention.

The X-ray diffraction peaks of the product are shown in the curve of Li ₂ B ₄ O ₇ -1 wt% Mg ₄ Ta ₂ O ₉ in FIG. 1 . It can be seen from the curve in the figure that all the diffraction peaks correspond to the standard diffraction peaks (PDF#08-0717). The transmittance of the sample is shown in Figure 2 for LBO-1wt%MTO, which shows that the transmittance of the sample is good. As shown in Figure 4, the 30keV X-ray excitation emission spectrum of Li ₂ B ₄ O ₇ -1wt%Mg ₄ Ta ₂ O ₉ shows that its emission wavelength is at 398nm, and the luminous intensity is 11.8% of that of BGO crystal. Li ₂ B The light yield of ₄ O ₇ -1wt%Mg ₄ Ta ₂ O ₉ is 948ph/MeV.

Example 2

The preparation method of Li ₂ B ₄ O ₇ -1wt%(Mg _0.5 Zn _0.5 ) ₄ Ta ₂ O ₉ (LBO-1wt%MZTO) scintillation glass-ceramic comprises the following steps:

Use an analytical balance to accurately weigh the glass raw materials Li ₂ B ₄ O ₇ , MgO, ZnO, and Ta ₂ O ₅ calculated according to the stoichiometric ratio, fully grind the glass raw materials in an agate mortar for 60 minutes, and pour the ground raw materials into Put it into a corundum crucible, put it into a high-temperature muffle furnace at 1000°C and keep it warm for 4 hours to obtain a uniform glass liquid, then rapidly cool the glass liquid to obtain the target scintillating glass-ceramics, and cut the obtained scintillating glass-ceramics , Surface grinding and polishing are processed into the scintillation glass-ceramic of the present invention.

The X-ray diffraction peaks of the product are shown in the curve of Li ₂ B ₄ O ₇ -1wt%(Mg _0.5 Zn _0.5 ) ₄ Ta ₂ O ₉ in FIG. 1 . It can be seen from the curve in the figure that all the diffraction peaks correspond to the standard diffraction peaks (PDF#08-0717). The transmittance of the sample is shown in Figure 2 for LBO-1wt%MZTO, which shows that the transmittance of the sample is good. As shown in Figure 5, the 30keV X-ray excitation emission spectrum of Li ₂ B ₄ O ₇ -1wt%(Mg _0.5 Zn _0.5 ) ₄ Ta ₂ O ₉ shows that its emission wavelength is at 403nm, and its luminous intensity is 14.7% of that of BGO crystal. The light yield of Li ₂ B ₄ O ₇ -1wt%(Mg _0.5 Zn _0.5 ) ₄ Ta ₂ O ₉ was 1179ph/MeV.

Example 3

The preparation method of Li ₂ B ₄ O ₇ -1wt%Mg ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ (LBO-1wt% MTNO) scintillation glass-ceramics comprises the following steps:

Use an analytical balance to accurately weigh the glass raw materials Li ₂ B ₄ O ₇ , MgO, Ta ₂ O ₅ , and Nb ₂ O ₅ calculated according to the stoichiometric ratio, and fully grind the glass raw materials in an agate mortar for 60 minutes. Pour the raw materials into a corundum crucible, put them into a high-temperature muffle furnace at 1000°C and keep them warm for 4 hours to obtain a uniform glass liquid, then rapidly cool the glass liquid to obtain the target scintillation glass-ceramics, and initially The product is processed into the sparkling glass-ceramic of the present invention after cutting, surface grinding and polishing.

The X-ray diffraction peaks of the product are shown in the curve of Li ₂ B ₄ O ₇ -1 wt% Mg ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ in Fig. 1 . It can be seen from the curve in the figure that all the diffraction peaks correspond to the standard diffraction peaks (PDF#08-0717). The transmittance of the sample is shown in Fig. 2 for LBO-1wt% MTNO, which shows that the transmittance of the sample is good. As shown in Figure 6, the 30keV X-ray excitation emission spectrum of Li ₂ B ₄ O ₇ -1wt%Mg ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ shows that its emission wavelength is at 399nm, and its luminous intensity is 12.5% of that of BGO crystal, The light yield of Li ₂ B ₄ O ₇ -1wt%Mg ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ was detected to be 998ph/MeV.

Example 4

The preparation method of Li ₂ B ₄ O ₇ -1wt%(Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ (LBO-1wt%MZTNO) scintillation glass ceramics comprises the following steps:

Use an analytical balance to accurately weigh the glass raw materials Li ₂ B ₄ O ₇ , MgO, ZnO, Ta ₂ O ₅ , and Nb ₂ O ₅ calculated according to the stoichiometric ratio, and fully grind the glass raw materials in an agate mortar for 60 minutes. Pour the ground raw materials into a corundum crucible, put them into a high-temperature muffle furnace at 1050°C for 8 hours to keep warm to obtain a uniform glass liquid, and then rapidly cool the glass liquid to obtain the target scintillating glass-ceramic, and the obtained scintillating glass-ceramic The first glass product is processed into the sparkling glass-ceramics of the present invention after cutting, surface grinding and polishing.

The X-ray diffraction peaks of the product are shown in Fig. 1 as Li ₂ B ₄ O ₇ -1 wt% (Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ . It can be seen from the curve in the figure that all the diffraction peaks correspond to the standard diffraction peaks (PDF#08-0717). The transmittance of the sample is shown in Figure 2 for LBO-1wt%MZTNO, which shows that the transmittance of the sample is good. As shown in Figure 7, the 30keV X-ray excitation emission spectrum of Li ₂ B ₄ O ₇ -1wt%(Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ shows that its emission wavelength is at 413nm, and the luminous intensity is that of BGO 18.1% of the crystal, and the light yield of Li ₂ B ₄ O ₇ -1wt% (Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ was detected to be 1445ph/MeV.

Example 5

The preparation method of Li ₂ B ₄ O ₇ -5wt%(Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ (LBO-5wt%MZTNO) scintillation glass-ceramics comprises the following steps:

Use an analytical balance to accurately weigh the glass raw materials Li ₂ B ₄ O ₇ , MgO, ZnO, Ta ₂ O ₅ , and Nb ₂ O ₅ calculated according to the stoichiometric ratio, and fully grind the glass raw materials in an agate mortar for 60 minutes. Pour the ground raw materials into a corundum crucible, put them into a high-temperature muffle furnace at 1050°C for 8 hours to keep warm to obtain a uniform glass liquid, and then rapidly cool the glass liquid to obtain the target scintillating glass-ceramic, and the obtained scintillating glass-ceramic The first glass product is processed into the sparkling glass-ceramics of the present invention after cutting, surface grinding and polishing.

The X-ray diffraction peaks of the product are shown in Figure 1 as Li ₂ B ₄ O ₇ -5wt%(Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ . It can be seen from the curve in the figure that all the diffraction peaks correspond to the standard diffraction peaks (PDF#08-0717). The transmittance of the sample is shown in Figure 3 for LBO-5wt%MZTNO, which shows that the transmittance of the sample is good. As shown in Figure 8, the 30keV X-ray excitation emission spectrum of Li ₂ B ₄ O ₇ -5wt%(Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ shows that its emission wavelength is at 426nm, and the luminous intensity is that of BGO 20.8% of the crystal, the light yield of Li ₂ B ₄ O ₇ -5wt% (Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ was detected to be 1665ph/MeV.

Example 6

The preparation method of Li ₂ B ₄ O ₇ -10wt% (Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ (LBO-10wt% MZTNO) scintillation glass-ceramics comprises the following steps:

Use an analytical balance to accurately weigh the glass raw materials Li ₂ B ₄ O ₇ , MgO, ZnO, Ta ₂ O ₅ , and Nb ₂ O ₅ calculated according to the stoichiometric ratio, and fully grind the glass raw materials in an agate mortar for 60 minutes. Pour the ground raw materials into a corundum crucible, put them into a high-temperature muffle furnace at 1050°C for 8 hours to keep warm to obtain a uniform glass liquid, and then rapidly cool the glass liquid to obtain the target scintillating glass-ceramic, and the obtained scintillating glass-ceramic The first glass product is processed into the sparkling glass-ceramics of the present invention after cutting, surface grinding and polishing.

The X-ray diffraction peaks of the product are shown in Fig. 1 as Li ₂ B ₄ O ₇ -10 wt% (Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ . It can be seen from the curve in the figure that all the diffraction peaks correspond to the standard diffraction peaks (PDF#08-0717). The transmittance of the sample is shown in Figure 3 for LBO-10wt%MZTNO, which shows that the transmittance of the sample is good. As shown in Figure 9, the 30keV X-ray excitation emission spectrum of Li ₂ B ₄ O ₇ -10wt%(Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ shows that its emission wavelength is at 420nm, and the luminous intensity is that of BGO 38.4% of the crystal, and the light yield of Li ₂ B ₄ O ₇ -10wt% (Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ was detected to be 3075ph/MeV.

Example 7

The preparation method of Li ₂ B ₄ O ₇ -15wt% (Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ (LBO-15wt% MZTNO) scintillation glass ceramics comprises the following steps:

Use an analytical balance to accurately weigh the glass raw materials Li ₂ B ₄ O ₇ , MgO, ZnO, Ta ₂ O ₅ , and Nb ₂ O ₅ calculated according to the stoichiometric ratio, and fully grind the glass raw materials in an agate mortar for 60 minutes. Pour the ground raw materials into a corundum crucible, put them into a high-temperature muffle furnace at 1100°C and keep them warm for 12 hours to obtain a uniform glass liquid, and then rapidly cool the glass liquid to obtain the target scintillating glass-ceramic, and the obtained scintillating glass-ceramic The first glass product is processed into the sparkling glass-ceramics of the present invention after cutting, surface grinding and polishing.

The X-ray diffraction peaks of the product are shown in Figure 1 as Li ₂ B ₄ O ₇ -15wt%(Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ . It can be seen from the curve in the figure that all the diffraction peaks correspond to the standard diffraction peaks (PDF#08-0717). The transmittance of the sample is shown in Figure 3 for LBO-15wt%MZTNO, which shows that the transmittance of the sample is good. As shown in Figure 10, the 30keV X-ray excitation emission spectrum of Li ₂ B ₄ O ₇ -15wt%(Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ shows that its emission wavelength is at 426nm, and the luminous intensity is that of BGO 45.1% of the crystal, and the light yield of Li ₂ B ₄ O ₇ -15wt% (Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ was detected to be 3606ph/MeV.

Example 8

The preparation method of Li ₂ B ₄ O ₇ -20wt% (Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ (LBO-20wt% MZTNO) scintillation glass-ceramics comprises the following steps:

Use an analytical balance to accurately weigh the glass raw materials Li ₂ B ₄ O ₇ , MgO, ZnO, Ta ₂ O ₅ , and Nb ₂ O ₅ calculated according to the stoichiometric ratio, and fully grind the glass raw materials in an agate mortar for 60 minutes. Pour the ground raw materials into a corundum crucible, put them into a high-temperature muffle furnace at 1100°C and keep them warm for 12 hours to obtain a uniform glass liquid, and then rapidly cool the glass liquid to obtain the target scintillating glass-ceramic, and the obtained scintillating glass-ceramic The first glass product is processed into the sparkling glass-ceramics of the present invention after cutting, surface grinding and polishing.

The X-ray diffraction peaks of the product are shown in Fig. 1 as Li ₂ B ₄ O ₇ -20 wt% (Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ . It can be seen from the curve in the figure that all the diffraction peaks correspond to the standard diffraction peaks (PDF#08-0717). The transmittance of the sample is shown in Figure 3 for LBO-20wt%MZTNO, which shows that the transmittance of the sample is good. As shown in Figure 11, the 30keV X-ray excitation emission spectrum of Li ₂ B ₄ O ₇ -20wt%(Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ shows that its emission wavelength is at 431nm, and the luminous intensity is that of BGO 28.7% of the crystal, and the light yield of Li ₂ B ₄ O ₇ -20wt% (Mg _0.5 Zn _0.5 ) ₄ (Ta _0.5 Nb _0.5 ) ₂ O ₉ was detected to be 2297ph/MeV.

The foregoing is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any form and in essence. Several improvements and supplements are made, and these improvements and supplements should also be regarded as the protection scope of the present invention.

Claims (7)

1. The borate scintillation microcrystalline glass is characterized in that the chemical composition expression of the borate scintillation microcrystalline glass is Li ₂ B ₄ O ₇ -(Mg _1-x Zn _x ) ₄ (Ta _1-y Nb _y ) ₂ O ₉ Wherein x is more than or equal to 0 and less than or equal to 0.5,0 and less than or equal to 0.5 ₂ B ₄ O ₇ As a matrix, (Mg) _1-x Zn _x ) ₄ (Ta _1-y Nb _y ) ₂ O ₉ Is a microcrystalline phase.

2. The borate scintillating microcrystalline glass of claim 1, wherein the light yield of the borate scintillating microcrystalline glass is 948-3606 ph/MeV.

3. The borate scintillating microcrystalline glass of claim 1, wherein the microcrystalline phase (Mg) is _1-x Zn _x ) ₄ (Ta _1-y Nb _y ) ₂ O ₉ The doping proportion of (A) is 1-20 wt%.

4. The method for preparing the borate scintillating microcrystalline glass according to any one of claims 1 to 3, which is characterized by comprising the following steps: weighing raw material Li according to stoichiometric ratio ₂ B ₄ O ₇ 、MgO、ZnO、Ta ₂ O ₅ 、Nb ₂ O ₅ Fully grinding the raw materials in an agate mortar, pouring the ground raw materials into a corundum crucible, then putting the corundum crucible into a muffle furnace for melting treatment to obtain uniform glass liquid, then carrying out rapid cooling treatment on the glass liquid to obtain a target scintillation glass-ceramic primary product, and processing the obtained scintillation glass-ceramic primary product after cutting, surface grinding and polishing to obtain the borate scintillation glass-ceramic.

5. The method for preparing borate scintillating microcrystalline glass according to claim 4, wherein the milling time is 60min.

6. The method for preparing borate scintillating microcrystalline glass according to claim 4, wherein the melting treatment temperature is 1000-1100 ℃ and the time is 4-12 h.

7. Use of the borate scintillating microcrystalline glass of any of claims 1 to 3 for detection, screening and quantitative analysis of ionizing radiation and high-energy particles.

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