4-8 July 2016
Kramer Law building
Africa/Johannesburg timezone
<a href="http://events.saip.org.za/internalPage.py?pageId=10&confId=86">The Proceedings of SAIP2016</a> published on 24 December 2017

Thermoluminescence investigation of Sm<sup>3+</sup> activated NaSrBO<sub>3</sub> phosphors for gamma dosimetry.

5 Jul 2016, 16:10
1h 50m
Kramer Law building

Kramer Law building

UCT Middle Campus Cape Town
Board: A.057
Poster Presentation Track A - Division for Physics of Condensed Matter and Materials Poster Session (1)

Speaker

Dr Ankush Kumar Bedyal (Department of Physics, University of Free State)

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?

Yes

Abstract content <br> &nbsp; (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>

Thermoluminescence characteristics of Sm3+ activated NaSrBO3 phosphors synthesized by solid state method and combustion method have been studied. The phosphors were investigated for their crystal structure using powder X-ray diffraction. A Thermoluminescence (TL) study was carried out after exposing the samples to γ-radiation in the range of 0.01-5 kGy. The TL glow curves exhibited a prominent peak at a lower temperature 402 K and a small hump at 466 K for the samples synthesized by combustion method whereas the glow peaks position shifted towards higher temperature for the samples synthesized by solid state method. The intensity of the peaks raised with the increase in the dose of the gamma rays (0.01–5 kGy). The TL intensity has also improved when synthesis by combustion method. The phosphors exhibited sublinear TL response to gamma-radiation over a wide range of gamma doses (0.01–5 kGy). To analyze the glow curves the TLanal program was used at different doses (0.2–5 kGy). In addition to this, the trapping parameters of all the samples were also calculated using Chen's peak shape method.

Please indicate whether<br>this abstract may be<br>published online<br>(Yes / No)

Yes

Main supervisor (name and email)<br>and his / her institution

H. C. Swart,Department of Physics, UFS, P.O. Box 339, Bloemfontein, ZA9300, South Africa (email:swarthc@ufs.ac.za)

Apply to be<br> considered for a student <br> &nbsp; award (Yes / No)?

Yes

Level for award<br>&nbsp;(Hons, MSc, <br> &nbsp; PhD, N/A)?

PhD

Primary author

Dr Ankush Kumar Bedyal (Department of Physics, University of Free State)

Co-authors

Prof. Hendrik Swart (University of the Free State) Prof. Odireleng Ntwaeaborwa (University of the Free State) Dr Vinay Kumar (Shri Mata Vaishno Devi University, Katra)

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