A double-sided radiating flat-panel X-ray source using ZnO nanowire field emitters. (October 2017)

• Record Type: Journal Article
• Authors: Chen, Daokun; Xu, Yuan; Zhang, Guofu; Zhang, Zhipeng; She, Juncong; Deng, Shaozhi; Xu, Ningsheng; Chen, Jun
• Is Part Of: Vacuum. Volume 144(2017)
• Page Start: 266
• Page End: 271
• Publication Date: 2017-10
• Subjects: Flat-panel X-ray source -- Field emission -- ZnO nanowires -- Double-sided radiating; Vacuum -- Periodicals; 621.55
• DOI: 10.1016/j.vacuum.2017.08.015
• Languages: English
• ISSNs: 0042-207X

Abstract

Abstract: 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 ∼200 mGy/min and ∼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. Highlights: A vacuum-sealed double-sided radiating flat-panel X-ray source device using ZnO nanowire field emitters. Good field emission properties from ZnO nanowires and similar X-ray radiation from both sides of the device. Potential applications of the device in compact and portable X-ray radiography and irradiation systems.