Exploring the luminescence properties and dosimetric characteristics of CaSO4:Tb, CaSO4:Mn, and CaSO4:Mn,Tb phosphors synthesized by slow evaporation route

IF 1.6 3区物理与天体物理 Q2 NUCLEAR SCIENCE & TECHNOLOGY

Radiation Measurements Pub Date : 2024-07-30 DOI:10.1016/j.radmeas.2024.107261

Anderson M.B. Silva , Daniel S. Rodrigues , Beatriz D.O. Guedes , Iury S. Silveira , Patrícia L. Antonio , Danilo O. Junot , Linda V.E. Caldas , Divanizia N. Souza

{"title":"Exploring the luminescence properties and dosimetric characteristics of CaSO4:Tb, CaSO4:Mn, and CaSO4:Mn,Tb phosphors synthesized by slow evaporation route","authors":"Anderson M.B. Silva , Daniel S. Rodrigues , Beatriz D.O. Guedes , Iury S. Silveira , Patrícia L. Antonio , Danilo O. Junot , Linda V.E. Caldas , Divanizia N. Souza","doi":"10.1016/j.radmeas.2024.107261","DOIUrl":null,"url":null,"abstract":"<div>This work aimed to investigate and compare the luminescence properties of CaSO4:Tb, CaSO4:Mn, and CaSO4:Mn,Tb synthesized by slow evaporation route. The crystalline structure, morphology, and optical properties of the phosphors were characterized by X-ray diffraction analysis (XRD), photoluminescence (PL), radioluminescence (RL), and scanning electron microscopy (SEM). In addition, thermoluminescence (TL) and optically stimulated luminescence (OSL) were used to comprehensively investigate the dosimetric properties of the phosphors, such as the TL glow curve and continuous wave OSL (CW-OSL) curves, dose-response and its reproducibility, fading, and sensitivity. For dosimetric analyses, the samples were irradiated with beta radiation. PL and RL emission spectra confirmed the presence of Tb3+ and Mn2+ ions in crystalline matrices. The samples showed a typical exponential OSL decay curve, indicating that the charge traps have a high photoionization cross-section for blue LEDs. The synthesized pellets exhibited good luminescent and dosimetric properties, with linear luminescent response over a wide dose range (169 mGy–100 Gy) and reproducibility of both OSL and TL signals. Furthermore, the incorporation of terbium as a co-dopant in the CaSO4:Mn matrix reduced its fading from 75% to only 17%. The phosphors had high TL and OSL sensitivities in comparison to some commercially available dosimeters.</div>","PeriodicalId":21055,"journal":{"name":"Radiation Measurements","volume":null,"pages":null},"PeriodicalIF":1.6000,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiation Measurements","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1350448724002099","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"NUCLEAR SCIENCE & TECHNOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

This work aimed to investigate and compare the luminescence properties of CaSO₄:Tb, CaSO₄:Mn, and CaSO₄:Mn,Tb synthesized by slow evaporation route. The crystalline structure, morphology, and optical properties of the phosphors were characterized by X-ray diffraction analysis (XRD), photoluminescence (PL), radioluminescence (RL), and scanning electron microscopy (SEM). In addition, thermoluminescence (TL) and optically stimulated luminescence (OSL) were used to comprehensively investigate the dosimetric properties of the phosphors, such as the TL glow curve and continuous wave OSL (CW-OSL) curves, dose-response and its reproducibility, fading, and sensitivity. For dosimetric analyses, the samples were irradiated with beta radiation. PL and RL emission spectra confirmed the presence of Tb³⁺ and Mn²⁺ ions in crystalline matrices. The samples showed a typical exponential OSL decay curve, indicating that the charge traps have a high photoionization cross-section for blue LEDs. The synthesized pellets exhibited good luminescent and dosimetric properties, with linear luminescent response over a wide dose range (169 mGy–100 Gy) and reproducibility of both OSL and TL signals. Furthermore, the incorporation of terbium as a co-dopant in the CaSO₄:Mn matrix reduced its fading from 75% to only 17%. The phosphors had high TL and OSL sensitivities in comparison to some commercially available dosimeters.

查看原文本刊更多论文

探索慢速蒸发路线合成的 CaSO4:Tb、CaSO4:Mn 和 CaSO4:Mn,Tb 磷光体的发光特性和剂量测定特征

这项工作旨在研究和比较通过缓慢蒸发路线合成的 CaSO:Tb、CaSO:Mn 和 CaSO:Mn,Tb 的发光特性。通过 X 射线衍射分析 (XRD)、光致发光 (PL)、辐射发光 (RL) 和扫描电子显微镜 (SEM) 对这些荧光粉的晶体结构、形貌和光学特性进行了表征。此外，还利用热致发光（TL）和光激发发光（OSL）全面研究了荧光粉的剂量特性，如 TL 辉光曲线和连续波 OSL（CW-OSL）曲线、剂量反应及其再现性、衰减和灵敏度。为了进行剂量测定分析，对样品进行了β射线辐照。PL 和 RL 发射光谱证实了晶体基质中存在铽和锰离子。样品显示出典型的指数 OSL 衰减曲线，表明电荷阱对蓝光 LED 具有较高的光电离截面。合成的颗粒具有良好的发光和剂量测定特性，在较宽的剂量范围（169 mGy-100 Gy）内具有线性发光响应，OSL 和 TL 信号均具有可重复性。此外，铽作为共掺杂剂加入 CaSO:Mn 基质后，其衰减率从 75% 降至 17%。与一些市售剂量计相比，这些荧光粉具有很高的 TL 和 OSL 灵敏度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Radiation Measurements 工程技术-核科学技术

CiteScore

4.10

自引率

20.00%

发文量

116

审稿时长

48 days

期刊介绍： The journal seeks to publish papers that present advances in the following areas: spontaneous and stimulated luminescence (including scintillating materials, thermoluminescence, and optically stimulated luminescence); electron spin resonance of natural and synthetic materials; the physics, design and performance of radiation measurements (including computational modelling such as electronic transport simulations); the novel basic aspects of radiation measurement in medical physics. Studies of energy-transfer phenomena, track physics and microdosimetry are also of interest to the journal. Applications relevant to the journal, particularly where they present novel detection techniques, novel analytical approaches or novel materials, include: personal dosimetry (including dosimetric quantities, active/electronic and passive monitoring techniques for photon, neutron and charged-particle exposures); environmental dosimetry (including methodological advances and predictive models related to radon, but generally excluding local survey results of radon where the main aim is to establish the radiation risk to populations); cosmic and high-energy radiation measurements (including dosimetry, space radiation effects, and single event upsets); dosimetry-based archaeological and Quaternary dating; dosimetry-based approaches to thermochronometry; accident and retrospective dosimetry (including activation detectors), and dosimetry and measurements related to medical applications.