Charge carrier release mechanisms underlying the emission of alkali feldspar infrared stimulated luminescence

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

Radiation Measurements Pub Date : 2025-02-01 DOI:10.1016/j.radmeas.2024.107362

Owen M. Williams, Nigel A. Spooner

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引用次数: 0

Abstract

Within a recent experimental study we reported that ultraviolet measurements of infrared stimulated luminescence (IRSL) from a variety of alkali feldspars are characterised by the common presence of fast and slow pulse components. We interpreted our observations as indicating the presence of charge carrier processes associated respectively with electrons and alkali ions. Within our present study we utilise the defect pair model we have employed within earlier quartz studies in order to seek physical explanations for the underlying mechanisms. For this purpose, we argue that the most likely source defect is a trivalent charge-compensated titanium dimer. Within our model, we propose complementary defect reaction pairs that involve the respective release of electrons and alkali ions. Our analysis, which is concentrated on the charge carrier release mechanisms, involves the construction of appropriate configurational coordinate diagrams which we utilise in order to explain the origin of the fast and slow IRSL components and also that of infrared photoluminescence (IRPL).

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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.