A double-sided radiating flat-panel X-ray source using ZnO nanowire field emitters

被引：38
作者：
Chen, Daokun [1 ]
Xu, Yuan [2 ]
Zhang, Guofu [1 ]
Zhang, Zhipeng [1 ]
She, Juncong [1 ]
Deng, Shaozhi [1 ]
Xu, Ningsheng [1 ]
Chen, Jun [1 ]
机构：
[1] Sun Yat Sen Univ, Sch Elect & Informat Technol, Guangdong Prov Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China
[2] Southern Med Univ, Sch Biomed Engn, Guangzhou 510515, Guangdong, Peoples R China
来源：
VACUUM | 2017年 / 144卷
关键词：
Flat-panel X-ray source; Field emission; ZnO nanowires; Double-sided radiating; ELECTRON-EMISSION; CARBON NANOTUBES; IRRADIATION; LITHOGRAPHY;
D O I：
10.1016/j.vacuum.2017.08.015
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A double-sided radiating flat-panel X-ray source device has been developed. The device has a diode configuration composed of an anode target of a tungsten thin film and field-emitter arrays of ZnO nanowires prepared on glass substrates. The X-ray radiation comes from both transmission and reflection of X-rays induced by electron bombardment. When operated at 24 kV with an anode current of 3.16 mA, radiation dose rates of similar to 200 mGy/min and similar to 210 mGy/min were recorded positioning at 4 cm away from the front and back sides of the vacuum-sealed flat-panel X-ray source, respectively. Clear X-ray images with high contrast were taken by the radiation from both sides of the device. The reported device has great potential in making compact X-ray radiography and irradiation systems. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：266 / 271
页数：6
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