Hemam Ritesh, Singh L Robindro, Singh S Dorendrajit
Department of Physics, Kumbi College, Kumbi, Manipur, 795133, India.
Department of Nanotechnolgy, North-Eastern Hill University, Shillong, Meghalaya, 793022, India.
J Fluoresc. 2022 Nov;32(6):2107-2117. doi: 10.1007/s10895-022-03009-x. Epub 2022 Aug 3.
CaBO nanoparticles doped with different concentrations of Dy were prepared by using solution combustion method. The recorded Thermoluminescence (TL) and Optically stimulated luminescence (OSL) of CaBO:Dy samples for different concentrations of Dy irradiated with 6 Gy of X-Ray shows concentration quenching effect above 0.05 at.wt% of Dy concentrations. The TL and OSL kinetic parameters of glow curves were evaluated using "tgcd" and conventional fitting methods. The TL glow curve of the CTB:(0.05%)Dy have five individual glow peaks with maximum peak temperatures at 410, 470, 525, 563 and 593 K. TL Dose response of the X-Ray irradiated CTB:(0.05%)Dy is also found to be linear in the range of 1 Gy to 50 Gy. The OSL glow curves of the CTB:Dy nanoparticles follow non-first order kinetics and can be fitted with the sum of three first order decay curves. Fading characteristics of the TL and OSL signals are studied for 40 days and found to be very stable.
采用溶液燃烧法制备了掺杂不同浓度镝（Dy）的CaBO纳米颗粒。记录了不同浓度Dy的CaBO:Dy样品在6 Gy X射线照射下的热释光（TL）和光激发发光（OSL），结果表明，当Dy浓度高于0.05 at.wt%时，出现浓度猝灭效应。使用“tgcd”和传统拟合方法评估了发光曲线的TL和OSL动力学参数。CTB:(0.05%)Dy的TL发光曲线有五个单独的发光峰，最大峰值温度分别为410、470、525、563和593 K。还发现X射线照射的CTB:(0.05%)Dy的TL剂量响应在1 Gy至50 Gy范围内呈线性。CTB:Dy纳米颗粒的OSL发光曲线遵循非一级动力学，可由三条一级衰减曲线的总和拟合。研究了TL和OSL信号40天的衰退特性，发现其非常稳定。
