Thermoluminescence response and trap parameters determination of gamma exposed Ce doped SrS nanostructures

• Published in: Journal of alloys and compounds Vol. 490; no. 1; pp. L33 - L36
• Main Authors: Vij, Ankush, Lochab, S.P., kumar, Ravi, Singh, Nafa
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 04-02-2010; Elsevier
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Glow curve; Kinetic analysis; Nanocrystals and nanoparticles; Nanostructures; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures; Physics; Thermoluminescence; Trapping parameters; Kinetic analysis; Nanostructures; Trapping parameters; Glow curve; Thermoluminescence; Nanofiber; Line intensity; Charge carrier trapping; Deconvolution; Gamma irradiation; Whiskers; Strontium sulfide; Cerium additions; Kinetics; Nanostructured materials; Glow discharges
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2009.10.075

Thermoluminescence of Ce doped SrS nanostructures exposed to Co-60 gamma radiations (0.1
Gy to 7
kGy) has been investigated. TL glow curves for gamma doses in the range of 0.1–200
Gy, consist of a dominant peak at 386
K with a very weak peak at 538
K. At higher doses (1–7
kGy), the peak at 386
K shifts to the higher temperature of 421
K, while the other peak at 538
K becomes more intense. This anomalous shifting of the first peak from 386
K to 421
K has been explained in the framework of Chen's peak shape method. Kinetic analysis of the experimental TL glow curve has been carried out using glow curve deconvolution (GCD) functions to determine the trapping parameters.