252Cf -induced luminescence of cerium-doped lithium silicate glasses

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2022-01-01 DOI:10.1016/j.jlumin.2021.118481

Hirokazu Masai , Hiromi Kimura , Masaki Akatsuka , Takumi Kato , Naoyuki Kitamura , Takayuki Yanagida

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引用次数: 3

Abstract

In addition to the total attenuation of ionizing radiation, photoluminescence has been conventionally recognized to affect radiation-induced luminescence. In this study, we examined the optical and luminescence properties of Ce³⁺ in lithium silicate-based glasses with different optical basicities. The existence of Ce⁴⁺ was confirmed based on the optical absorption, Ce L₃-edge X-ray absorption near edge structure (XANES), and optical coefficients of the calculated Ce⁴⁺ using the optical absorption and XANES data of Ce⁴⁺ species from a previous report. Compared to other multicomponent glasses, there was a slight deviation in the decay constant and quantum yield (QY) of the stoichiometric Li₂O–2SiO₂ glass. In addition, the light yields calculated from the pulse height spectra with ²⁵²Cf irradiation depend on the QY of the glasses. Considering the energy conversion process, the dependence of the light yield agreed with that of the conventional energy conversion process of neutron-induced luminescence.

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掺铈硅酸锂玻璃的252Cf致发光研究

除了电离辐射的总衰减外，光致发光通常被认为影响辐射诱导发光。在这项研究中，我们研究了Ce3+在不同光学碱度的硅酸盐锂基玻璃中的光学和发光性质。根据光学吸收、Ce4+的x射线边缘吸收近边缘结构(XANES)和Ce4+的光学吸收和XANES数据计算Ce4+的光学系数，证实了Ce4+的存在。与其他多组分玻璃相比，化学计量Li2O-2SiO2玻璃的衰减常数和量子产率(QY)有轻微偏差。此外，由252Cf辐照的脉冲高度光谱计算的产光量取决于玻璃的QY。考虑能量转换过程，产光率的依赖性与传统中子诱导发光的能量转换过程一致。

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

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.