Growth and scintillation properties of cadmium thallium codoped sodium iodide crystals

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2024-12-15 DOI:10.1016/j.jlumin.2024.121031

Zhaopeng Xu , Zhenxi Zhang , Zhengze Li , Zurong Yin , Bin Zhang , Dongsheng Tian , Wusheng Xu , Yongchao Jia

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引用次数: 0

Abstract

NaI:Cd(0, 0.01 mol%, 0.05 mol%, 0.10 mol%, 0.20 mol%), Tl(0.18 mol%) crystals were grown using Bridgman method respectively. The crystal structure and composition of the samples were determined by X-ray powder diffraction, inductively coupled plasma emission spectra, and ultraviolet–visible near-infrared transmission spectra. After cutting, polishing, and packaging processes, NaI:Cd,Tl crystals were encapsulated for radiation detection. The scintillation results showed that under the excitation of a¹³⁷Cs radiation source, the energy resolution of NaI:Cd,Tl crystals with Cd doping of 0.01 mol% and 0.05 mol% were less than 7.8 %, and the light output increased 4%–6% compared with that of NaI:Tl crystal. The occupancy mechanism of Cd and Tl elements in NaI crystals was fully discussed using density functional theory. This is conducive to the further application of NaI crystals in the field of high-energy particle detection.

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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.