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Research Paper

Applied Science and Convergence Technology 2020; 29(6): 170-175

Published online November 30, 2020


Copyright © The Korean Vacuum Society.

Experimental Study of Argon and Helium Dielectric Barrier Discharge with Coplanar Electrodes at Intermediate Pressure for Reducing Radar Cross Section

Jang Jae Leea , Si Jun Kima , b , Young Seok Leea , Chul Hee Choa , Min Su Choia , In Ho Seonga , Sang Ho Leea , Won Nyoung Jeonga , and Shin Jae Youa , c , *

aDepartment of Physics, Chungnam National University, Daejeon 34134, Republic of Korea
bNanotech Optoelectronics Research Center, Yongin 16882, Republic of Korea
cInstitute of Quantum Systems (IQS), Chungnam National University, Daejeon 34134, Republic of Korea

Correspondence to:E-mail: sjyou@cnu.ac.kr

Received: October 12, 2020; Revised: November 18, 2020; Accepted: November 19, 2020


In this study, we experimentally investigated the discharge characteristics of argon and helium dielectric barrier discharges with coplanar electrodes at intermediate pressure to reduce the radar cross section for plasma-based stealth applications. The discharge patterns of argon and helium were investigated according to the pressure, driving frequency, and gas ratio with a fixed input voltage, and the discharge voltages and currents were measured. The power dissipated by the device in one cycle was calculated using the measured values. From the discharge pattern and measured values, we confirmed that a bright glow discharge occurred at a few Torr of argon and tens of Torr of helium, and the discharge was brighter and more uniform in the driving frequency range 5–6 kHz. When a mixture of the two gases was used at tens of Torr, the brightness of the discharge pattern and the number of current pulses increased with the proportion of helium, while the intensity of the current pulses decreased. We confirmed that an efficient and stable discharge can be generated at frequencies 5–6 kHz using several Torr of argon or tens of Torr of helium.

Keywords: Coplanar dielectric barrier discharge, Intermediate pressure, Plasma, Radar cross section

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