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Proceedings Paper

The fabrication of sub-micron size cesium iodide x-ray scintillator
Author(s): Chien Wan Hun; Po Chun Chen; Ker Jer Huang; Chien Chon Chen
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Paper Abstract

The cesium iodide (CsI) scintillator can converts incident X-ray into visible light with very high conversion efficiency of optical photons. The incident energy, response time, film thickness, sample size, and spatial resolution require in engineering and medical applications are difference. A smooth and flat surface and single crystal structure of CsI enhance the X-ray to visible light conversion. However, the regular CsI is soft and extremely hygroscopic; it is very difficult to polish to obtain a smooth and optical flat plane. In order to obtain a good quality of CsI scintillator for X-ray application we used an ordering channel as template and formed sub-micron CsI wire in the template. The fabrication process including: (1) Ordering structure of nano or sub-micron channels were made by an anodization method; (2) fill CsI scintillated film on the channel by CsI solution, (3) fill CsI melt into the channel formation single crystal of sub-micron crystalline scintillator after solidification. The non-vacuum processes of anodization and solidication methods were used for the sub-micron CsI scintillator column formation that is cost down the scintillator fabrication. In addition, through the fabrication method, the ordering structure scintillator of scintillator can be made by anodic treatment and die casting technology with low cost and rapid production; moreover, the film oxidized metal tubes of the tubular template can be further manufactured to nano tubes by adjusting electrolyte composition, electrolysis voltage, and processing time of anodic treatment, and the aperture size, the thickness and the vessel density of the nano tube can be controlled and ranged from 10 nm to 500 nm, 0.1 μm to 1000 μm, and hundred million to thousand billion tube/cm2, respectively.

Paper Details

Date Published: 12 May 2015
PDF: 9 pages
Proc. SPIE 9485, Thermosense: Thermal Infrared Applications XXXVII, 94850M (12 May 2015); doi: 10.1117/12.2176785
Show Author Affiliations
Chien Wan Hun, National United Univ. (Taiwan)
Po Chun Chen, National Chiao Tung Univ. (Taiwan)
Ker Jer Huang, Chung-Shan Institute of Science and Technology (Taiwan)
Chien Chon Chen, National United Univ. (Taiwan)

Published in SPIE Proceedings Vol. 9485:
Thermosense: Thermal Infrared Applications XXXVII
Sheng-Jen (Tony) Hsieh; Joseph N. Zalameda, Editor(s)

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