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請使用永久網址來引用或連結此文件:
http://ir.lib.ncut.edu.tw/handle/987654321/5820
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| 題名: | Fabrication of Nanoscale Cesium Iodide (CsI)Scintillators for High-Energy Radiation Detection |
| 作者: | Chen, Chih Yuan
Hun, Chien Wan
Chen, Shih-Fan
Chen, Chien Chon
Lin, Jin Shyong
Johnson, Shardai S.
Noel, Niyoyankunze
Juliely, Niyogushima
Luo, Zhiping |
| 貢獻者: | 圖書館 |
| 關鍵詞: | CESIUM IODIDE (CSI)
NANO
SCINTILLATOR
THERMODYNAMICS
X-RAY RADIATION DETECTION |
| 日期: | 2015-03 |
| 上傳時間: | 2016-10-14 09:26:23 (UTC+8) |
| 出版者: | American Scientific Publishers |
| 摘要: | The CsI-based scintillators have been widely used for X- or gamma-ray detections. It has been known that columnar scintillators favor the detections with higher efficiency and spatial resolution. In this paper, we report a facile and low-cost method to fabricate submicron nanoscale CsI columns. We integrated the thermodynamic calculations, positive chamber design, mold design, electrochemical bath design, anodization process, and solidification techniques to fabricate such submicron CsI columns. When the CsI melt is confined to AAO channels with a high aspect ratio, stable CsI columns solidified with smooth surfaces, and free of dendrites or grain boundaries. Different solidification approaches have been attempted, including mechanical injection in vacuum under a negative pressure, injection at 1 atm, 3 atm and 25 atm using Ar gas only, and mechanical injection with 1.6 atm Ar pressure. The mechanical injection or high-pressure Ar injection at 25 atm produced good filling of CsI melt into AAO channels. Such CsI columns inside the smooth AAO walls enable the high-energy radiation detection with high light emission for pixelated scintillator applications. |
| 關聯: | Reviews in Nanoscience and Nanotechnology |
| 顯示於類別: | [機械工程系(所)] 【機械工程系】期刊論文
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