title: Broadband microwave characteristics of a novel coaxial gridded hollow cathode argon plasma.
abstract: The interaction between microwave and large area plasma is crucially important for space communication. Gas pressure, input power, and plasma volume are critical to both the microwave electromagnetic wave phase shift and electron density. This paper presents a novel type of large coaxial gridded hollow cathode plasma having a 50 cm diameter and a 40 cm thickness. Microwave characteristics are studied using a microwave measurement system that includes two broadband antennae in the range from 2 GHz to 18 GHz. The phase shift under varying gas pressure and input power is shown. In addition, the electron density ne, which varies from 1.2 × 10(16) m(-3) to 8.7 × 10(16) m(-3) under different discharge conditions, is diagnosed by the microwave system. The measured results accord well with those acquired by Langmuir Probe measurement and show that the microwave properties in the large volume hollow cathode discharge significantly depend on the input power and gas pressure.
authors: Department of Physics, Harbin Institute of Technology, Harbin 150001, China.
authors: Ruilin
authors: R
authors: Gao
authors: Department of Physics, Harbin Institute of Technology, Harbin 150001, China.
authors: Chengxun
authors: C
authors: Yuan
authors: Department of Physics, Harbin Institute of Technology, Harbin 150001, China.
authors: Hui
authors: H
authors: Li
authors: Department of Physics, Harbin Institute of Technology, Harbin 150001, China.
authors: Jieshu
authors: J
authors: Jia
authors: Department of Physics, Harbin Institute of Technology, Harbin 150001, China.
authors: Zhong-Xiang
authors: ZX
authors: Zhou
authors: Department of Physics, Harbin Institute of Technology, Harbin 150001, China.
authors: Ying
authors: Y
authors: Wang
authors: Department of Physics, Harbin Institute of Technology, Harbin 150001, China.
authors: Xiaoou
authors: X
authors: Wang
authors: National Key Laboratory of Electromagnetic Environment (LEME), China Research Institute of Radio Wave Propagation, Beijing 102206, China.
authors: Jian
authors: J
authors: Wu