场发射型脉冲x射线源余辉测量系统的研制

IF 3.6 3区 物理与天体物理 Q2 OPTICS
Hiromi Kimura , Takeshi Fujiwara , Ryoichi Suzuki , Hidetoshi Kato
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引用次数: 0

摘要

我们开发了一种基于针叶碳纳米结构的场发射型脉冲x射线源的台式余辉测量系统。该系统由一个脉冲x射线发生器和一个探测单元组成,x射线的脉冲宽度可调,从几微秒到连续工作。为了证明该系统的性能,对市面上已有的包括tl掺杂CsI、pr掺杂Gd2O2S(片状和陶瓷形式)、Bi4Ge3O12、CdWO4在内的闪烁体的余辉性能进行了评价。所获得的余辉分布与以前的研究结果相当。进一步证实了x射线脉冲宽度对余辉的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Development of afterglow measurement system using a field emission-type pulsed X-ray source
We have developed a desktop afterglow measurement system using a coniferous carbon nano-structure-based field emission-type pulsed X-ray source. The system is composed of a pulsed X-ray generator and a detector unit, and the pulsed width of the X-ray was adjustable from a few microseconds up to continuous operation. To demonstrate the performance of this system, the afterglow properties of commercially available scintillators including Tl-doped CsI, Pr-doped Gd2O2S (sheet and ceramic forms), Bi4Ge3O12, CdWO4 were evaluated. The obtained afterglow profiles were comparable to those in previous studies. Furthermore, the effect of the X-ray pulse width on the afterglow was confirmed.
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来源期刊
Journal of Luminescence
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.
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