Pr3+doped high-density scintillation glass and preparation method thereof
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A scintillation glass, high-density technology, applied in the field of high-density scintillation glass, can solve the problems of slow research progress of scintillation glass, low light yield and density of scintillation glass, and not widely used
Inactive Publication Date: 2008-12-10
EAST CHINA UNIV OF SCI & TECH
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Problems solved by technology
However, the research on scintillation glass has been slow for many years. So far, the light y
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Embodiment 1
[0014] Using Bi 2 o 3 、H 3 BO 3 , SiO 2 As the main raw material, add a small amount of oxidant Sb 2 o 3 and the active ion Pr 3+ (in Pr 6 o 11 introduction), the component design is shown in Table 1.
[0015] The glass composition (mol%) of table 1 embodiment 1
[0016]
[0017] The present embodiment batches 30g altogether, and each component quality is as follows table 2.
[0018] The mass proportion (g) of the glass component of table 2 embodiment 1
[0019]
[0020] According to the above ratio, after mixing the weighed raw materials evenly, the traditional melting-cooling method is used for melting. Pour the batch material into an alumina crucible and seal it, and keep it warm at 1200°C for about 0.5h. After the glass liquid is clarified, pour it into a preheated steel mold, and then transfer it to an annealing furnace for heat preservation and heat treatment. The annealing temperature is 400 ℃, the time is 1h.
[0021] The density of glass is 6.114g / c...
Embodiment 2～5
[0023] In the following examples, the glass preparation method is the same as Example 1, and the different glass compositions used are shown in Table 3.
[0024] The glass composition (mol%) of table 3 embodiment 2~5
[0025]
[0026] The glass density of table 4 embodiment 2~5
[0027]
[0028] Embodiment 1~5 glass density and Bi 2 o 3 See accompanying drawing 2 for the content relationship, and refer to accompanying drawing 3 for the emission spectrum.
Embodiment 6～7
[0030] Keep the glass matrix composition constant (embodiment 3: 50Bi 2 o 3 -10B 2 o 3 -40SiO 2 ), changing Pr 3+ The doping concentration and composition are shown in Table 5, and the emission spectrum is shown in Figure 4.
[0031] The glass composition (mol%) of table 5 embodiment 6~7
[0032]
[0033] The emission spectra of Examples 6-7 and 3 are shown in Figure 4.
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Abstract
The invention provides bismuth-boron-silicate scintillating glass doped with Pr<3+>. The glass density is also greatly improved without affecting the illumination intensity of the glass. On one hand, Bi<3+> with a high atomic weight can endue glass with high density so as to ensure the glass can be used as a substrate material of a scintillating material; on the other hand, an emission wavelength of the substrate material is over 300nm, matching of an optical signal with a light emitting diode can be realized; moreover, because of the innate transparency of the glass, the bismuth-boron-silicate scintillating glass doped with the Pr<3+> can be easily prepared with a simple process, and can realize the characteristics of low cost, large volume and so on. Compared with the prior oxide glass, the density of the bismuth-boron-silicate scintillating glass doped with the Pr<3+> can be improved to 7.0g/cm<3> from about 4.0g/cm<3> of the prior density, and the bismuth-boron-silicate scintillating glass doped with the Pr<3+> can emit stronger 488nm blue light, 530nm green light, 610nm orange light and 647nm red light. Therefore, the bismuth-boron-silicate scintillating glass doped with the Pr<3+> is a novel scintillating material.
Description
technical field [0001] The invention relates to high-density scintillation glass applicable to fields such as high-energy physical measurement, medical imaging, and geophysical detection. Background technique [0002] A scintillator is a photoconductive luminescent material that converts the ionization energy of high-energy photons (X-rays, γ-rays) or particles (hadrons, electrons, protons, α-particles, etc.) into ultraviolet / visible photons. an energy converter. Scintillators play a very important role in the research of high-energy particles. The identification of particles, the measurement of particle properties and the discovery of new particles are all inseparable from high-performance scintillators. With the rapid development of high-energy physics, nuclear physics and radiation physics, especially with the improvement of nuclear medical equipment such as positron emission tomography (PET) and the construction of the US Super Superconducting Collider (SSC), the Wester...
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