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Permeation and optical properties of YAG:Er3+ fiber membrane scintillators prepared by novel sol–gel/electrospinning method
- Source :
- Journal of Sol-Gel Science and Technology. 83:35-43
- Publication Year :
- 2017
- Publisher :
- Springer Science and Business Media LLC, 2017.
-
Abstract
- An electrospinning method for fabrication of the YAG:Er3+ fibrous membrane is developed and the scintillation properties of the obtained membranes were examined. A homogeneous precursor YAG sol was synthesized allowing to control the sol–gel transition. The synthesized precursor allows one to achieve the 5 wt.% level of fiber doping with Er without formation of any undesired crystalline phases. It was found that the relative humidity had a strong impact on the fiber microstructure. The fibers obtained at the low relative humidity level (~30%) had almost straight cylindrical shape with an average diameter of ~590 nm, their surface was smooth. The shape of fibers obtained at the high relative humidity level (~50%) deviated from the straight cylindrical shape and the average diameter was larger, ~1.12 µm. The fluid permeability of membranes, K, obtained at the low relative humidity level was measured using an upward wicking experiment to give K~10−13 m2. The YAG:Er membrane presented a strong green photoluminescence under ultraviolet excitation and intense radioluminescence dominated by emission lines at 398 and 467 nm under the X-ray excitation. The properties of these materials make them promising candidates as porous scintillators for the detection of ionizing radiation of flowing fluids.
- Subjects :
- Photoluminescence
Materials science
02 engineering and technology
General Chemistry
Radioluminescence
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Microstructure
Fluid transport
01 natural sciences
Electrospinning
0104 chemical sciences
Electronic, Optical and Magnetic Materials
Biomaterials
Membrane
Materials Chemistry
Ceramics and Composites
Relative humidity
Composite material
0210 nano-technology
Sol-gel
Subjects
Details
- ISSN :
- 15734846 and 09280707
- Volume :
- 83
- Database :
- OpenAIRE
- Journal :
- Journal of Sol-Gel Science and Technology
- Accession number :
- edsair.doi...........e31acbcd3f082a7f131e33a2a4463b9f