Cerium-ion activated flashing light-emitting material for X-ray detection and method for preparing the same
A scintillation luminescence and X-ray technology, applied in luminescent materials, chemical instruments and methods, etc., to achieve the effects of high light yield, simple preparation process and easy control of conditions
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[0012] Example 1
[0013] Weigh anhydrous sodium carbonate (Na 2 CO 3 )0.0021g, cerium oxide (CeO 2 )0.0069g, aluminum oxide (Al 2 O 3 ) 0.4078g, strontium carbonate (SrCO 3 ) 1.1692g, strontium chloride (SrCl 2 ·6H 2 O) 1.0665g, grind and mix evenly in a mortar, transfer to alumina crucible, 5% H 2 -95% N 2 It is calcined at 1000°C for 5 hours in an atmosphere. Cooling and grinding, the X-ray powder diffraction results of the sample and Sr 3 Al 2 O 5 Cl 2 The standard card (JCPDS no80-0564) is consistent, and the composition formula is Sr 2.98 Ce 0.01 Na 0.01 Al 2 O 5 Cl 2 Powder scintillating material. When the scintillation material is excited at 340nm, its fluorescence wavelength is between 350-600nm, its strongest emission peak is about 440nm, and the corresponding fluorescence lifetime is 33.8 nanoseconds. Combine the sample with the reference sample BaF 2 Test and compare under the same conditions, such as figure 1 Shown. Calculated sample Sr 2.98 Ce 0.01 Na 0.01 Al 2 O ...
Example Embodiment
[0014] Example 2
[0015] This embodiment is basically the same as embodiment 1, except that Ce is increased 3+ The doping content. Weigh anhydrous sodium carbonate (Na 2 CO 3 )0.0212g, cerium oxide (CeO 2 )0.0688g, aluminum oxide (Al 2 O 3 ) 0.4078g, strontium carbonate (SrCO 3 )1.0629g, strontium chloride (SrCl 2 ·6H 2 O) 1.0665g, grind and mix evenly in a mortar, transfer to alumina crucible, 5% H 2 -95% N 2 It is calcined at 1000°C for 5 hours in an atmosphere. The powder scintillation material is obtained by cooling and grinding.
Example Embodiment
[0016] Example 3
[0017] This embodiment is basically the same as Embodiments 1 and 2, except that Ce is further increased. 3+ The doping content. Weigh anhydrous sodium carbonate (Na 2 CO 3 )0.0636g, cerium oxide (CeO 2 ) 0.2065g, aluminum oxide (Al 2 O 3 ) 0.4078g, strontium carbonate (SrCO 3 )0.8267g, strontium chloride (SrCl 2 ·6H 2 O) 1.0665g, grind and mix evenly in a mortar, transfer to alumina crucible, 5% H 2 -95% N 2 It is calcined at 1000°C for 5 hours in an atmosphere. The powder scintillation material is obtained by cooling and grinding.
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