title: Investigation on the Plasma-Induced Emission Properties of Large Area Carbon Nanotube Array Cathodes with Different Morphologies.
abstract: Large area well-aligned carbon nanotube (CNT) arrays with different morphologies were synthesized by using a chemical vapor deposition. The plasma-induced emission properties of CNT array cathodes with different morphologies were investigated. The ratio of CNT height to CNT-to-CNT distance has considerable effects on their plasma-induced emission properties. As the ratio increases, emission currents of CNT array cathodes decrease due to screening effects. Under the pulse electric field of about 6 V/μm, high-intensity electron beams of 170-180 A/cm(2) were emitted from the surface plasma. The production mechanism of the high-intensity electron beams emitted from the CNT arrays was plasma-induced emission. Moreover, the distribution of the electron beams was in situ characterized by the light emission from the surface plasma.
authors: State Key Laboratory for Advanced Metals and Materials, Department of Materials Physics, University of Science and Technology Beijing, 100083, Beijing, China.
authors: Qingliang
authors: Q
authors: Liao
authors: State Key Laboratory for Advanced Metals and Materials, Department of Materials Physics, University of Science and Technology Beijing, 100083, Beijing, China.
authors: Zi
authors: Z
authors: Qin
authors: State Key Laboratory for Advanced Metals and Materials, Department of Materials Physics, University of Science and Technology Beijing, 100083, Beijing, China.
authors: Zheng
authors: Z
authors: Zhang
authors: State Key Laboratory for Advanced Metals and Materials, Department of Materials Physics, University of Science and Technology Beijing, 100083, Beijing, China.
authors: Junjie
authors: J
authors: Qi
authors: State Key Laboratory for Advanced Metals and Materials, Department of Materials Physics, University of Science and Technology Beijing, 100083, Beijing, China. yuezhang@ustb.edu.cn.
authors: Yue
authors: Y
authors: Zhang
authors: State Key Laboratory for Advanced Metals and Materials, Department of Materials Physics, University of Science and Technology Beijing, 100083, Beijing, China.
authors: Yunhua
authors: Y
authors: Huang
authors: Department of Physics, Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, 100084, Beijing, China.
authors: Liang
authors: L
authors: Liu
keywords: Carbon nanotubes; Chemical vapor deposition; High-intensity electron beams; Plasma-induced emission