First LM-OSL analysis of natural alexandrite

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

Radiation Measurements Pub Date : 2025-04-22 DOI:10.1016/j.radmeas.2025.107441

Yasmim F. Amorim , Matheus C.S. Nunes , Alicja Chruścińska , Krzysztof Wiśniewski , Neilo M. Trindade

引用次数: 0

Abstract

Linearly Modulated Optically Stimulated Luminescence (LM-OSL) analysis of alexandrite in powder form and incorporated with a polymer matrix was performed in order to investigate the components of its curves. LM-OSL curves were deconvoluted into four first-order components, and the behavior of their intensities revealed two traps’ pairs: super-fast component and fast component, and medium component and slow component, responsible for the LM-OSL signal of powder alexandrite. The thermal stability test showed that after 100 °C of preheat temperature, the super-fast component of alexandrite pellet vanishes. A luminescence spectrum collected under 470 nm stimulation indicated a photoluminescence process, suggesting electrons excitation can cause disturbance in OSL process when the luminescence is stimulated with blue LEDs due to its high energy photons.

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首次对天然亚历山大变石进行LM-OSL分析

采用线性调制光激发发光法（LM-OSL）对掺入聚合物基质的亚历山大变石进行了粉末形态的分析，以研究其曲线的组成。将LM-OSL曲线解卷积为4个一阶分量，其强度表现为两组陷阱对：超快分量和快分量、中速分量和慢速分量，它们负责粉末亚历山大变石的LM-OSL信号。热稳定性测试表明，经过100℃的预热温度后，绿翠石球团的超快成分消失。在470 nm激发下采集的发光光谱显示为光致发光过程，说明在蓝光led激发发光时，由于电子激发的光子能量较高，会对光致发光过程造成干扰。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.