scholarly journals Determination of Plasma Flow Velocity by Mach Probe and Triple Probe with Correction by Laser-Induced Fluorescence in Unmagnetized Plasmas

2006 ◽  
Vol 45 (7) ◽  
pp. 5945-5950 ◽  
Author(s):  
Yong-Sup Choi ◽  
Hyun-Jong Woo ◽  
Kyu-Sun Chung ◽  
Myoung-Jae Lee ◽  
David Zimmerman ◽  
...  
Keyword(s):  
Flow Velocity ◽  
Plasma Flow ◽  
Laser Induced Fluorescence ◽  
Mach Probe

scholarly journals Characteristics of Plasma Flow for Microwave Plasma Assisted Aerosol Deposition

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1705
Author(s):  
In-Je Kang ◽  
Chang-Hyun Cho ◽  
Hyonu Chang ◽  
Soo-Ouk Jang ◽  
Hyun-Jae Park ◽  
...  
Keyword(s):  
Flow Velocity ◽  
Plasma Flow ◽  
Microwave Plasma ◽  
Plasma Source ◽  
Aerosol Deposition ◽  
Calibration Factor ◽  
Novel Structure ◽  
Mach Probe ◽  
Optimized Conditions ◽  
Variation Simulation

To validate the possibility of the developed microwave plasma source with a novel structure for plasma aerosol deposition, the characteristics of the plasma flow velocity generated from the microwave plasma source were investigated by a Mach probe with pressure variation. Simulation with the turbulent model was introduced to deduce calibration factor of the Mach probe and to compare experimental measurements for analyses of collisional plasma conditions. The results show calibration factor does not seem to be a constant parameter and highly dependent on the collision parameter. The measured plasma flow velocity, which witnessed fluctuations produced by a shock flow, was between 400 and 700 m/s. The optimized conditions for microwave plasma assisted aerosol deposition were derived by the results obtained from analyses of the parameters of microwave plasma jet. Under the optimized conditions, Y2O3 coatings deposited on an aluminum substrate were investigated using scanning electron microscope. The results presented in this study show the microwave plasma assisted aerosol deposition with the developed microwave plasma source is highly feasible for thick films with >50 μm.

Direct Measurement of a Plasma Flow Velocity Using a Mach Probe in Hanbit Magnetic Mirror Device

2003 ◽  
Vol 43 (1T) ◽  
pp. 277-279
Author(s):  
G. Y. Kwak ◽  
Y. S. Choi ◽  
Y. H. Jung ◽  
K.-S. Chung ◽  
J. G. Bak ◽  
...  
Keyword(s):  
Flow Velocity ◽  
Direct Measurement ◽  
Plasma Flow ◽  
Magnetic Mirror ◽  
Mach Probe
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