A cuprous ion-doped borosilicate glass for radiation detection and a preparation method thereof

Abstract

A cuprous ion-doped borosilicate glass for radiation detection and a preparation method thereof. The method uses a reduction melting method to prepare a Cu + ion-doped borosilicate glass. After the obtained glass sample is irradiated with X-rays of a certain dose, bright long afterglow will be generated under ultraviolet light excitation, and there is an obvious linear relationship between the initial light intensity of the afterglow and the X-ray dose. The glass of the present invention is prepared under a reducing atmosphere, and the mass percentages of each component are as follows: 50-75 mol% of SiO2, 8-13 mol% of Na2O, 6-10 mol% of CaO, 0-2 mol% of Al2O3, and 5-30 mol% of B2O3; the doped luminescent ion is CuO with a concentration of 0.01-0.1 mol%. The present invention for the first time uses X-rays to induce specific defect structures in the glass to achieve long afterglow luminescence of the glass, and there is an obvious linear relationship between the initial light intensity of the afterglow and the X-ray dose, and it is proposed to carry out radiation dose detection based on this.

Description

Technical Field

[0001] The present invention relates to the technical field of radiation detection materials, and particularly to a cuprous ion-doped borosilicate glass for radiation detection and a preparation method thereof. Technical Background

[0002] With the continuous development of technical fields such as high-energy physics, nuclear energy science, nondestructive testing, and radioactive medical diagnosis and treatment, high-energy rays have been widely used in our production and life. High-energy rays are extremely dangerous and cannot be directly observed by the naked eye. Therefore, how to detect them has become a crucial issue.

[0003] To detect high-energy rays, it is necessary to convert them into other observable signals through specific materials. Currently, there are mainly two methods for detecting high-energy rays: the direct conversion method and the indirect conversion method. The core material of the direct conversion method is a photoelectric semiconductor, which absorbs high-energy rays and directly converts them into electrical signals, and then the electrical signals are collected and amplified into computer output signals; the core materials of the indirect conversion method are divided into two categories: scintillation materials and radiation storage luminescent materials. Scintillation materials can produce visible light under high-energy radiation, convert high-energy ray photons into low-energy visible photons, and then indirectly detect high-energy rays through a photodetector. Radiation storage luminescent materials include three types: radiation photoluminescent materials (RPL materials), thermoluminescent materials (TSL materials), and optically stimulated luminescence (OSL materials). The main type actually applied is radiation photoluminescent materials. Such materials will generate a new energy level structure inside under radiation induction and produce photoluminescence under the excitation of light with a specific wavelength. The radiation dose is calculated through the linear relationship between the light intensity of the emitted light and the radiation dose.

[0004] Currently, all kinds of reported radiation detection materials have their own limitations. The core semiconductor material of the direct-type detector has low sensitivity and is still in the stage of small-scale application; scintillation materials have problems such as low scintillation efficiency and light scattering; radiation photoluminescent materials have problems such as unstable RPL signals caused by the accumulation effect. Considering that the requirements for radiation detection materials in different fields are different, continuously developing more excellent radiation detection materials has always been a research hotspot.

[0005] In the known patent case CN114180836B, Ma Xiben et al. proposed a silver-neodymium co-doped lithium aluminum phosphate glass that can be used for radiation detection. However, the radiation dose range that this material can detect is 50 Gy - 250 Gy, and the detection range is relatively limited. Moreover, the doping element selected is silver ion, and the actual application cost is relatively high. Summary of the Invention

[0006] The object of the present invention is to provide a cuprous ion-doped borosilicate glass for radiation detection and a preparation method thereof, and to perform radiation dose detection through the linear relationship between the initial light intensity of the persistent afterglow of the material after irradiation and the radiation dose. This glass has the characteristics of stable physical and chemical properties, low production cost, high radiation detection sensitivity, and wide detection range.

[0007] The technical solution adopted by the present invention is as follows:

[0008] A preparation method of a cuprous ion-doped borosilicate glass for radiation detection, characterized by comprising:

[0009] Introduce cuprous ions into the borosilicate glass by CuO, and obtain the cuprous ion-doped borosilicate glass under a reducing atmosphere;

[0010] Irradiate the cuprous ion-doped borosilicate glass with X-rays of 200 Gy - 2000 Gy, so that the irradiated cuprous ion-doped borosilicate glass can produce a blue persistent afterglow under the irradiation of an ultraviolet lamp, and the initial light intensity of this afterglow has a linear relationship with the radiation dose.

[0011] Further, the linear relationship means that the initial light intensity of the persistent afterglow increases with the increase of the radiation dose, and the ratio between the two is approximately a fixed value.

[0012] Further, the components and molar percentages of the cuprous ion-doped borosilicate glass are 50 - 75 mol% of SiO2, 8 - 13 mol% of Na2O, 6 - 10 mol% of CaO, 0 - 2 mol% of Al2O3, 5 - 30 mol% of B2O3; the doped luminescent ions are CuO with a concentration of 0.01 - 0.1 mol%.

[0013] Further, the SiO2 is introduced by SiO2, the CaO is introduced by CaCO3, the Na2O is introduced by Na2CO3, the Al2O3 is introduced by Al(OH)3, the B2O3 is introduced by H3BO3, and the doped cuprous ions are introduced by CuO. The weighed raw materials are ground in a mortar and mixed evenly to form a mixed material.

[0014] Further, the reducing atmosphere is adding NH4NO3, adding (NH4)2SO4, adding NH4Cl, adding urea, adding Al powder, adding Si powder, adding C powder, using a graphite crucible, using a CO atmosphere or using an Ar + H2 atmosphere.

[0015] Further, the manufacturing method under the reducing atmosphere means maintaining the temperature for 0.5 - 3 h under the reducing atmosphere at 1200 - 1550 °C.

[0016] Further, the wavelength of the ultraviolet lamp is 200 - 400 nm.

[0017] Furthermore, the dose of the X-ray is 500 Gy - 1250 Gy.

[0018] On the other hand, the present invention also provides a cuprous ion-doped borosilicate glass prepared by using the preparation method of the above cuprous ion-doped borosilicate glass.

[0019] In addition, an application of the above cuprous ion-doped borosilicate glass in radiation detection is provided.

[0020] Technical effects of the present invention:

[0021] 1) Cuprous ions are introduced by adding CuO, and the melting atmosphere of the glass is controlled by a reduction method, so that the cuprous ions in the glass exist in the form of Cu + .

[0022] 2) By irradiating test samples with X-rays of different doses and exciting the irradiated glass samples with ultraviolet light of 200 - 400 nm, bright long afterglow will be generated. The afterglow properties of the glass irradiated with different doses of X-rays are different. After testing with a fluorescence spectrometer, the initial light intensity of the afterglow shows an obvious linear relationship with the radiation dose.

[0023] 3) Compared with the reported radiation photoluminescent materials, such as a silver-neodymium co-doped lithium aluminum phosphate glass and its preparation method and application (CN114180836B), the maximum radiation dose range that the cuprous ion-doped borosilicate glass prepared by the present invention can detect is extended from 200 Gy to 2000 Gy, and the linear degree between the initial light intensity of the long afterglow of the material of the present invention and the irradiation dose is higher, which means that the material of the present invention has higher accuracy for radiation detection. Description of the Drawings

[0024] Figure 1 It is the afterglow lifetime diagram of Example 1# of the present invention after being irradiated with X-rays of different doses.

[0025] Figure 2 It is the linear relationship diagram between the initial light intensity of the long afterglow and the radiation dose of Example 1# of the present invention. Detailed Embodiments

[0026] The present invention will be further explained below according to the embodiments and the drawings, but the protection scope of the present invention should not be limited thereby.

[0027] Cuprous ion-doped borosilicate glass is introduced by CuO, and cuprous ion-doped borosilicate glass is prepared under a reducing atmosphere, including the following steps:

[0028] ①According to 50-75 mol% of SiO2, 8-13 mol% of Na2O, 6-10 mol% of CaO, 0-2 mol% of Al2O3, and 5-30 mol% of B2O3; the doped luminescent ions are CuO with a concentration of 0.01-0.1 mol%, calculate the masses of the corresponding glass compositions, accurately weigh each raw material and mix them evenly to form a mixture.

[0029] ②Perform reduction melting on the mixture. After holding for a period of time, pour the obtained clarified glass liquid onto a preheated graphite plate and press it into sheets to obtain the original glass.

[0030] ③Transfer the obtained glass to an annealing furnace for annealing. After cooling with the furnace, take out the glass and process it into small pieces.

[0031] ④Irradiate the cuprous ion-doped borosilicate glass with X-rays of 500 Gy - 1250 Gy.

[0032] The 18 specific implementation glass components and melting conditions of the X-ray-induced cuprous ion-doped borosilicate long afterglow glass of the present invention are as follows:

[0033] Table 1: Glass Formulations of 18 Specific Implementation Cases

[0034]

[0035] Example 1#:

[0036] Weigh 50 g of raw materials according to Table 1 and place them in a mortar. Add 5 g of NH4NO3 and mix them evenly with the raw materials to obtain a mixture. Put the mixture into a covered corundum crucible, place it in an electric furnace and heat it up to 1350 °C with the furnace. After holding for 1 h, take it out, pour the glass liquid onto a preheated graphite mold at 450 °C. Transfer the glass to an annealing furnace at 450 °C for annealing, hold for 3 hours, cool with the furnace to room temperature. After complete cooling, take out the glass sample, cut it into small pieces and then polish it to obtain the test sample.

[0037] Irradiate the test samples with X-rays of 500 Gy, 750 Gy, 1000 Gy and 1250 Gy respectively. The irradiated glass has a bright blue long afterglow under a 280 nm ultraviolet lamp. After testing with a spectrometer, the initial light intensity of the afterglow shows an obvious linear relationship with the radiation dose.

[0038] The afterglow lifetime diagrams of the glass irradiated with X-rays of different doses are as Figure 1 shown, and the linear relationship between the initial light intensity of the long afterglow and the radiation dose is as Figure 2 shown.

[0039] Perform transmission spectrum testing and EPR testing on the samples, which proves that the copper ions in the glass are mainly Cu+ 。

[0040] Example 2#:

[0041] Weigh 50 g of raw materials according to Table 1 and place them in a mortar. Add 6 g of (NH4)2SO4 and mix evenly with the raw materials to obtain a mixture. Put the mixture into a covered corundum crucible, place it in an electric furnace and heat it up to 1350 °C along with the furnace. After holding for 1 h, take it out, pour the glass liquid onto a graphite mold preheated to 450 °C. Transfer the glass to an annealing furnace at 450 °C for annealing, hold for 3 hours, and cool it down to room temperature along with the furnace. After complete cooling, take out the glass sample, cut it into small pieces and then polish it to obtain the test sample.

[0042] Irradiate the test sample with X-rays of 500 Gy, 750 Gy, 1000 Gy and 1250 Gy. The irradiated glass has a faint blue long afterglow under a 280 nm ultraviolet lamp. After testing with a spectrometer, the initial light intensity of the afterglow shows an approximate linear relationship with the radiation dose.

[0043] Example 3#:

[0044] Weigh 50 g of raw materials according to Table 1 and place them in a mortar. Add 6 g of NH4Cl and mix evenly with the raw materials to obtain a mixture. Put the mixture into a covered corundum crucible, place it in an electric furnace and heat it up to 1350 °C along with the furnace. After holding for 1 h, take it out, pour the glass liquid onto a graphite mold preheated to 450 °C. Transfer the glass to an annealing furnace at 450 °C for annealing, hold for 3 hours, and cool it down to room temperature along with the furnace. After complete cooling, take out the glass sample, cut it into small pieces and then polish it to obtain the test sample.

[0045] Irradiate the test sample with X-rays of 500 Gy, 750 Gy, 1000 Gy and 1250 Gy. The irradiated glass has a faint blue long afterglow under a 280 nm ultraviolet lamp. After testing with a spectrometer, the initial light intensity of the afterglow shows an approximate linear relationship with the radiation dose.

[0046] Example 4#:

[0047] Weigh 50 g of raw materials according to Table 1 and place them in a mortar. Add 6 g of urea and mix evenly with the raw materials to obtain a mixture. Put the mixture into a covered corundum crucible, place it in an electric furnace and heat it up to 1350 °C along with the furnace. After holding for 1 h, take it out, pour the glass liquid onto a graphite mold preheated to 450 °C. Transfer the glass to an annealing furnace at 450 °C for annealing, hold for 3 hours, and cool it down to room temperature along with the furnace. After complete cooling, take out the glass sample, cut it into small pieces and then polish it to obtain the test sample.

[0048] The test samples were irradiated with X-rays of 500 Gy, 750 Gy, 1000 Gy, and 1250 Gy. The irradiated glass had a faint blue long afterglow under a 280 nm ultraviolet lamp. After testing with a spectrometer, the initial light intensity of the afterglow showed an approximately linear relationship with the radiation dose.

[0049] Example 5#:

[0050] Weighed 50 g of raw materials according to Table 1 and placed them in a mortar. Added 2 g of Al powder and mixed evenly with the raw materials to obtain a mixture. Put the mixture into a covered corundum crucible, placed it in an electric furnace and heated it to 1350 °C with the furnace, took it out after holding for 1 h, poured the glass liquid onto a graphite mold preheated to 450 °C. Transferred the glass to a 450 °C annealing furnace for annealing, held for 3 hours, cooled with the furnace to room temperature, took out the glass sample after complete cooling, cut it into small pieces and polished it to obtain the test sample.

[0051] The test samples were irradiated with X-rays of 500 Gy, 750 Gy, 1000 Gy, and 1250 Gy. The irradiated glass had no obvious long afterglow under a 280 nm ultraviolet lamp.

[0052] Example 6#:

[0053] Weighed 50 g of raw materials according to Table 1 and placed them in a mortar. Added 2 g of Si powder and mixed evenly with the raw materials to obtain a mixture. Put the mixture into a covered corundum crucible, placed it in an electric furnace and heated it to 1350 °C with the furnace, took it out after holding for 1 h, poured the glass liquid onto a graphite mold preheated to 450 °C. Transferred the glass to a 450 °C annealing furnace for annealing, held for 3 hours, cooled with the furnace to room temperature, took out the glass sample after complete cooling, cut it into small pieces and polished it to obtain the test sample.

[0054] The test samples were irradiated with X-rays of 500 Gy, 750 Gy, 1000 Gy, and 1250 Gy. The irradiated glass had no obvious long afterglow under a 280 nm ultraviolet lamp.

[0055] Example 7#:

[0056] Weighed 50 g of raw materials according to Table 1 and placed them in a mortar. Added 2 g of C powder and mixed evenly with the raw materials to obtain a mixture. Put the mixture into a covered corundum crucible, placed it in an electric furnace and heated it to 1350 °C with the furnace, took it out after holding for 1 h, poured the glass liquid onto a graphite mold preheated to 450 °C. Transferred the glass to a 450 °C annealing furnace for annealing, held for 3 hours, cooled with the furnace to room temperature, took out the glass sample after complete cooling, cut it into small pieces and polished it to obtain the test sample.

[0057] The test samples were irradiated with X-rays at 500 Gy, 750 Gy, 1000 Gy, and 1250 Gy. The irradiated glass had obvious blue long afterglow under a 280 nm ultraviolet lamp. After testing with a spectrometer, the initial light intensity of the afterglow showed an approximate linear relationship with the radiation dose.

[0058] Example 8#:

[0059] Weighed 50 g of raw materials according to Table 1 and placed them in a mortar to obtain a mixture; put the mixture into a small corundum crucible, then put the small crucible into a large covered corundum crucible and add carbon powder between the interlayers, and place it in an electric furnace to heat up to 1350 °C along with the furnace. After holding for 1 h, take it out, pour the glass liquid onto a graphite mold preheated to 450 °C; transfer the glass to a 450 °C annealing furnace for annealing, hold for 3 hours, cool down to room temperature along with the furnace, take out the glass sample after complete cooling, cut it into small pieces and then polish it to obtain the test sample.

[0060] The test samples were irradiated with X-rays at 500 Gy, 750 Gy, 1000 Gy, and 1250 Gy. The irradiated glass had obvious blue long afterglow under a 280 nm ultraviolet lamp. After testing with a spectrometer, the initial light intensity of the afterglow showed an obvious linear relationship with the radiation dose.

[0061] Example 9#:

[0062] Weighed 50 g of raw materials according to Table 1 and placed them in a mortar to obtain a mixture; put the mixture into a covered graphite crucible, place it in an electric furnace to heat up to 1350 °C along with the furnace. After holding for 1 h, take it out, pour the glass liquid onto a graphite mold preheated to 450 °C; transfer the glass to a 450 °C annealing furnace for annealing, hold for 3 hours, cool down to room temperature along with the furnace, take out the glass sample after complete cooling, cut it into small pieces and then polish it to obtain the test sample.

[0063] The test samples were irradiated with X-rays at 500 Gy, 750 Gy, 1000 Gy, and 1250 Gy. The irradiated glass had obvious blue long afterglow under a 280 nm ultraviolet lamp. After testing with a spectrometer, the initial light intensity of the afterglow showed an approximate linear relationship with the radiation dose.

[0064] Example 10#:

[0065] Weighed 50 g of raw materials according to Table 1 and placed them in a mortar to obtain a mixture; put the mixture into a corundum crucible, place it in a tubular furnace and heat up to 1350 °C along with the furnace while passing through an Ar + H2 mixed gas. After holding for 1 h, take it out, pour the glass liquid onto a graphite mold preheated to 450 °C; transfer the glass to a 450 °C annealing furnace for annealing, hold for 3 hours, cool down to room temperature along with the furnace, take out the glass sample after complete cooling, cut it into small pieces and then polish it to obtain the test sample.

[0066] The test samples were irradiated with X-rays of 500 Gy, 750 Gy, 1000 Gy and 1250 Gy. The irradiated glass had obvious blue long afterglow under ultraviolet light at 280 nm. After testing with a spectrometer, the initial light intensity of the afterglow showed an approximate linear relationship with the radiation dose.

[0067] Example 11#:

[0068] Weighed 50 g of raw materials according to Table 1 and placed them in a mortar. Added 6 g of NH4NO3 and mixed evenly with the raw materials to obtain a mixture. Put the mixture into a covered corundum crucible, placed it in an electric furnace and heated it to 1350 °C with the furnace. After holding for 1 h, take it out. Pour the glass liquid onto a graphite mold preheated to 450 °C. Transfer the glass to an annealing furnace at 450 °C for annealing, hold for 3 hours, cool it to room temperature with the furnace. After complete cooling, take out the glass sample, cut it into small pieces and polish it to obtain the test sample.

[0069] The test samples were irradiated with X-rays of 500 Gy, 750 Gy, 1000 Gy and 1250 Gy. The irradiated glass had obvious blue long afterglow under ultraviolet light at 280 nm. After testing with a spectrometer, the initial light intensity of the afterglow showed an approximate linear relationship with the radiation dose.

[0070] Example 12#:

[0071] Weighed 50 g of raw materials according to Table 1 and placed them in a mortar. Added 6 g of NH4NO3 and mixed evenly with the raw materials to obtain a mixture. Put the mixture into a covered corundum crucible, placed it in an electric furnace and heated it to 1350 °C with the furnace. After holding for 1 h, take it out. Pour the glass liquid onto a graphite mold preheated to 450 °C. Transfer the glass to an annealing furnace at 450 °C for annealing, hold for 3 hours, cool it to room temperature with the furnace. After complete cooling, take out the glass sample, cut it into small pieces and polish it to obtain the test sample.

[0072] The test samples were irradiated with X-rays of 500 Gy, 750 Gy, 1000 Gy and 1250 Gy. The irradiated glass had obvious blue long afterglow under ultraviolet light at 280 nm. After testing with a spectrometer, the initial light intensity of the afterglow showed an approximate linear relationship with the radiation dose.

[0073] Example 13#:

[0074] Weigh 50 g of raw materials according to Table 1 and place them in a mortar. Add 6 g of NH4NO3 and mix well with the raw materials to obtain a mixture. Put the mixture into a covered corundum crucible, place it in an electric furnace and heat it up to 1350 °C along with the furnace. After holding for 1 h, take it out. Pour the glass liquid onto a graphite mold preheated to 450 °C. Transfer the glass to an annealing furnace at 450 °C for annealing, hold for 3 h, and cool it down to room temperature along with the furnace. After complete cooling, take out the glass sample, cut it into small pieces and then polish it to obtain the test sample.

[0075] Irradiate the test sample with X-rays of 500 Gy, 750 Gy, 1000 Gy and 1250 Gy. The irradiated glass has obvious blue long afterglow under a 280 nm ultraviolet lamp. After testing with a spectrometer, the initial light intensity of the afterglow shows an approximate linear relationship with the radiation dose.

[0076] Example 14#:

[0077] Weigh 50 g of raw materials according to Table 1 and place them in a mortar. Add 6 g of NH4NO3 and mix well with the raw materials to obtain a mixture. Put the mixture into a covered corundum crucible, place it in an electric furnace and heat it up to 1200 °C along with the furnace. After holding for 1 h, take it out. Pour the glass liquid onto a graphite mold preheated to 450 °C. Transfer the glass to an annealing furnace at 450 °C for annealing, hold for 3 h, and cool it down to room temperature along with the furnace. After complete cooling, take out the glass sample, cut it into small pieces and then polish it to obtain the test sample.

[0078] Irradiate the test sample with X-rays of 500 Gy, 750 Gy, 1000 Gy and 1250 Gy. The irradiated glass has obvious blue long afterglow under a 280 nm ultraviolet lamp. After testing with a spectrometer, the initial light intensity of the afterglow shows an approximate linear relationship with the radiation dose.

[0079] Example 15#:

[0080] Weigh 50 g of raw materials according to Table 1 and place them in a mortar. Add 6 g of NH4NO3 and mix well with the raw materials to obtain a mixture. Put the mixture into a covered corundum crucible, place it in an electric furnace and heat it up to 1400 °C along with the furnace. After holding for 1 h, take it out. Pour the glass liquid onto a graphite mold preheated to 450 °C. Transfer the glass to an annealing furnace at 450 °C for annealing, hold for [missing number] h, and cool it down to room temperature along with the furnace. After complete cooling, take out the glass sample, cut it into small pieces and then polish it to obtain the test sample.

[0081] Irradiate the test sample with X-rays of 500 Gy, 750 Gy, 1000 Gy and 1250 Gy. The irradiated glass has obvious blue long afterglow under a 280 nm ultraviolet lamp. After testing with a spectrometer, the initial light intensity of the afterglow shows an approximate linear relationship with the radiation dose.

[0082] Example 16#:

[0083] Weigh 50 g of raw materials according to Table 1 and place them in a mortar. Add 6 g of NH4NO3 and mix well with the raw materials to obtain a mixture. Put the mixture into a covered corundum crucible, place it in an electric furnace and heat it up to 1450 °C with the furnace. After holding for 1 h, take it out. Pour the glass melt onto a graphite mold preheated to 450 °C. Transfer the glass to an annealing furnace at 450 °C for annealing, hold for 3 h, and cool it to room temperature with the furnace. After complete cooling, take out the glass sample, cut it into small pieces and then polish it to obtain the test sample.

[0084] Irradiate the test sample with X-rays of 500 Gy, 750 Gy, 1000 Gy and 1250 Gy. The irradiated glass has obvious blue long afterglow under a 280 nm ultraviolet lamp. After testing with a spectrometer, the initial light intensity of the afterglow shows an approximate linear relationship with the radiation dose.

[0085] Example 17#:

[0086] Weigh 50 g of raw materials according to Table 1 and place them in a mortar. Add 6 g of NH4NO3 and mix well with the raw materials to obtain a mixture. Put the mixture into a covered corundum crucible, place it in an electric furnace and heat it up to 1500 °C with the furnace. After holding for 1 h, take it out. Pour the glass melt onto a graphite mold preheated to 450 °C. Transfer the glass to an annealing furnace at 450 °C for annealing, hold for 3 h, and cool it to room temperature with the furnace. After complete cooling, take out the glass sample, cut it into small pieces and then polish it to obtain the test sample.

[0087] Irradiate the test sample with X-rays of 500 Gy, 750 Gy, 1000 Gy and 1250 Gy. The irradiated glass has obvious blue long afterglow under a 280 nm ultraviolet lamp. After testing with a spectrometer, the initial light intensity of the afterglow shows an approximate linear relationship with the radiation dose.

[0088] Example 18#:

[0089] Weigh 50 g of raw materials according to Table 1 and place them in a mortar. Add 6 g of NH4NO3 and mix well with the raw materials to obtain a mixture. Put the mixture into a covered corundum crucible, place it in an electric furnace and heat it up to 1550 °C with the furnace. After holding for 1 h, take it out. Pour the glass melt onto a graphite mold preheated to 450 °C. Transfer the glass to an annealing furnace at 450 °C for annealing, hold for 3 h, and cool it to room temperature with the furnace. After complete cooling, take out the glass sample, cut it into small pieces and then polish it to obtain the test sample.

[0090] The test samples were irradiated with X-rays at 500 Gy, 750 Gy, 1000 Gy, and 1250 Gy. The irradiated glass had obvious blue long afterglow under a 280-nm ultraviolet lamp. After testing with a spectrometer, the initial light intensity of the afterglow showed an approximate linear relationship with the radiation dose.

[0091] After being irradiated with a certain dose of X-rays, the cuprous ion-doped borosilicate glass for radiation detection of the present invention will produce bright long afterglow under ultraviolet light excitation, and the initial light intensity of the afterglow shows an obvious linear relationship with the X-ray dose. Based on this, the glass of the present invention can be used to detect and measure the radiation dose, providing a new idea for radiation detection and expanding the types of radiation detection materials. The glass of the present invention has the characteristic of stably storing radiation signals in the material itself. The reading of the signals has good repeatability, high sensitivity to radiation detection, and a wide detection range. In addition, the material of the present invention has the advantages of low cost, simple preparation, and stable physical and chemical properties, which makes it have great practical application prospects.

[0092] Experiments show that after being irradiated with a certain dose of X-rays, the cuprous ion-doped borosilicate glass for radiation detection of the present invention will produce bright and persistent blue long afterglow under ultraviolet light excitation, and the initial light intensity of the afterglow shows an obvious linear relationship with the X-ray dose. Based on this, the radiation dose can be calculated, and it is a new type of radiation dose detection material with excellent performance.

Claims

1. A preparation method of cuprous ion-doped borosilicate glass for radiation detection, characterized in that, Including: Introduce copper ions into borosilicate glass by CuO to obtain cuprous ion-doped borosilicate glass under a reducing atmosphere; Irradiate the cuprous ion-doped borosilicate glass with X-rays of 500 Gy - 1250 Gy, so that the irradiated cuprous ion-doped borosilicate glass can produce blue long afterglow under ultraviolet light irradiation, and the initial light intensity of the afterglow has a linear relationship with the radiation dose; The reducing atmosphere is adding NH4NO3, adding (NH4)2SO4, adding NH4Cl, adding urea, adding C powder, using a graphite crucible, using a CO atmosphere or using an Ar + H2 atmosphere.

2. The preparation method of cuprous ion-doped borosilicate glass for radiation detection according to claim 1, characterized in that, The linear relationship means that the initial light intensity of the long afterglow increases with the increase of the radiation dose, and the ratio of the two is approximately a fixed value.

3. The preparation method of cuprous ion-doped borosilicate glass for radiation detection according to claim 1, characterized in that The components and molar percentages of the cuprous ion-doped borosilicate glass are 50 - 75 mol% of SiO2, 8 - 13 mol% of Na2O, 6 - 10 mol% of CaO, 0 - 2 mol% of Al2O3, 5 - 30 mol% of B2O3; the doped luminescent ions are CuO with a concentration of 0.01 - 0.1 mol%.

4. The preparation method of cuprous ion-doped borosilicate glass for radiation detection according to claim 3, characterized in that, The SiO2 is introduced by SiO2, the CaO is introduced by CaCO3, the Na2O is introduced by Na2CO3, the Al2O3 is introduced by Al(OH)3, the B2O3 is introduced by H3BO3, and the doped copper ions are introduced by CuO. The weighed raw materials are ground in a mortar and mixed evenly to form a mixture.

5. The preparation method of cuprous ion-doped borosilicate glass for radiation detection according to claim 1, characterized in that, The manufacturing method under the reducing atmosphere means holding for 0.5 - 3 h under a reducing atmosphere at 1200 - 1550 °C.

6. The preparation method of cuprous ion-doped borosilicate glass for radiation detection according to claim 1, wherein The wavelength of the ultraviolet light is 200 - 400 nm.

7. Cuprous ion-doped borosilicate glass prepared by the preparation method of cuprous ion-doped borosilicate glass according to any one of claims 1 - 6.

8. An application of the cuprous ion-doped borosilicate glass according to claim 7 in radiation detection.

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