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Luminescence study of LiMgBO 3 :Dy for γ‐ray and carbon ion beam exposure
- Source :
- Luminescence. 34:933-944
- Publication Year :
- 2019
- Publisher :
- Wiley, 2019.
-
Abstract
- LiMgBO3 :Dy3+ , a low Zeff material was prepared using the solution combustion method and its luminescence properties were studied using X-ray diffraction (XRD), scanning electron microscopy (SEM), thermoluminescence (TL), photoluminescence (PL), Fourier transform infrared spectroscopy, and electron paramagnetic resonance (EPR) techniques. Reitvield refinement was also performed for the structural studies. The PL emission spectra for LiMgBO3 :Dy3+ consisted of two peaks at 478 due to the 4 F9/2 →6 H15/2 magnetic dipole transition and at 572 nm due to the hypersensitive 4 F9/2 →6 H13/2 electric dipole transition of Dy3+ , respectively. A TL study was carried out for both the γ-ray-irradiated sample and the C5+ irradiated samples and was found to show high sensitivity for both. Moreover the γ-ray-irradiated LiMgBO3 :Dy3+ sample showed linearity in the dose range 10 Gy to 1 kGy and C5+ -irradiated samples show linearity in the fluence range 2 × 1010 to 1 × 1011 ions/cm2 . In the present study, the initial rise method, various heating rate method, the whole glow curve method, glow curve convolution deconvolution function, and Chen's peak shape method were used to calculate kinetic parameters to understand the TL glow curve mechanism in detail. Finally, an EPR study was performed to examine the radicals responsible for the TL process.
- Subjects :
- Photoluminescence
Materials science
Scanning electron microscope
Magnetic dipole transition
010401 analytical chemistry
Biophysics
Analytical chemistry
02 engineering and technology
021001 nanoscience & nanotechnology
01 natural sciences
Thermoluminescence
0104 chemical sciences
law.invention
Chemistry (miscellaneous)
law
Fourier transform infrared spectroscopy
Electric dipole transition
0210 nano-technology
Luminescence
Electron paramagnetic resonance
Subjects
Details
- ISSN :
- 15227243 and 15227235
- Volume :
- 34
- Database :
- OpenAIRE
- Journal :
- Luminescence
- Accession number :
- edsair.doi...........b8c8a01a4ceb925185dfb40903248715