X-ray high frequency pulse emission characteristic and application of CNT cold cathode x-ray source cathode x-ray source. (24th November 2021)

• Record Type: Journal Article
• Authors: Lai, Sheng; Tang, Xiaobin; Liu, Yunpeng; Mu, Junxu; Feng, Zhaopeng; Miao, Kai
• Is Part Of: Nanotechnology. Volume 33:Number 7(2022)
• Publication Date: 2021-11-24
• Subjects: x-ray communication -- carbon nanotube x-ray source -- high-frequency electron emission -- pulse source; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/ac378b
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: Carbon nanotube (CNT) field-emission x-ray source has great potential in x-ray communication (XCOM) because of its controllable emission and instantaneous response. A novel voltage loading mode was proposed in this work to achieve high-frequency pulse x-ray emission. The characteristics of cathode current and pulse x-ray versus voltage, frequency, and pulse amplitude were studied, and XCOM data transmission experiment was carried out. Results showed that the CNT cold cathode x-ray source, as a communication signal source, could work in 1.05 MHz pulse emission frequency. When the grid voltage was higher than 470 V, the pulse x-ray waveform amplitude achieved peak, and the shape exhibited a pseudo square wave. The duty cycle of the x-ray waveform exceeded 50%, reaching 56% when the pulse frequency reached 1 MHz. In the XCOM data transmission experiment, the pulsed x-ray waveform was well consistent with the loading data signal voltage waveform under different pulse-emission frequencies. This work realized the x-ray high-frequency pulse emission of CNT cold cathode x-ray source and lays a foundation for the development and application of CNT cold cathode x-ray source in XCOM.