Luminescence study of LiMgBO3 :Dy for γ-ray and carbon ion beam exposure

Luminescence : the Journal of Biological and Chemical Luminescence
M M YerpudeS J Dhoble

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 mechanis...Continue Reading

References

Oct 3, 2006·Seminars in Radiation Oncology·Daniela Schulz-ErtnerWolfgang Schlegel
Feb 27, 2010·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Herman SuitAlexei Trofimov
Feb 3, 2015·Luminescence : the Journal of Biological and Chemical Luminescence·Abha H OzaS J Dhoble
Jan 16, 2016·Luminescence : the Journal of Biological and Chemical Luminescence·M M YerpudeS J Dhoble
Apr 12, 2016·Luminescence : the Journal of Biological and Chemical Luminescence·A M BhakeS J Dhoble

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