Journal
VACUUM
Volume 144, Issue -, Pages 266-271Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.vacuum.2017.08.015
Keywords
Flat-panel X-ray source; Field emission; ZnO nanowires; Double-sided radiating
Funding
- National Key Research and Development Program of China [2016YFA0202001]
- National Key Basic Research Program of China [2010CB327703]
- Science and Technology Department of Guangdong Province
- Fundamental Research Funds for the Central Universities
- Guangzhou Science Technology and Innovation Commission
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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.
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