4 papers
Concept of SUb-atmospheric Radio-frequency Engine (SURE) for near space environment
Xiaogang Yuan, Lei Chang, Xinyue Hu +3
A concept of SUb-atmospheric Radio-frequency Engine (SURE) designed for near space environment is reported. The antenna wrapping quartz tube consists of two solenoid coils with var…
The role of second-order radial density gradient for helicon power absorption
Runlong Wang, Lei Chang, Xinyue Hu +6
To reveal the mysterious and still controversial mechanism of high ionization efficiency during helicon discharges, this work focuses particularly on the role of second-order deriv…
An Efficient Ionization Method for Pressure Up To Thousands of Pascals
Lei Chang, Xinyue Hu
A novel radio-frequency antenna consisting of isolated solenoids is reported to generate plasma for pressure up to thousands of pascals. The underlying mechanism involves capacitiv…
Coupling of RF Antennas to Large Volume Helicon Plasma
Lei Chang, Xinyue Hu, Lei Gao +5
Large volume helicon plasma sources are of particular interest for large scale semiconductor processing, high power plasma propulsion and recently plasma-material interaction under…