Plasma Flow Measurements with Mach Probe

1998 ◽  
Vol 67 (11) ◽  
pp. 3774-3778 ◽  
Author(s):  
Yoshimitsu Amagishi ◽  
Tetsuya Miyazaki
2004 ◽  
Vol 44 (7-8) ◽  
pp. 656-661 ◽  
Author(s):  
S. Kado ◽  
T. Shikama ◽  
S. Kajita ◽  
T. Oishi ◽  
S. Tanaka

2006 ◽  
Vol 506-507 ◽  
pp. 692-696 ◽  
Author(s):  
Akira Ando ◽  
Toshiaki Watanabe ◽  
Takashi Watanabe ◽  
Ryuichi Sato ◽  
Kenji Harata ◽  
...  

2010 ◽  
Vol 165 (2) ◽  
pp. 138-164
Author(s):  
G. S. Germaine ◽  
C. Xiao ◽  
A. Hirose

1989 ◽  
Vol 1 (11) ◽  
pp. 2229-2238 ◽  
Author(s):  
K‐S. Chung ◽  
I. H. Hutchinson ◽  
B. LaBombard ◽  
R. W. Conn

2002 ◽  
Vol 42 (1) ◽  
pp. 99-108 ◽  
Author(s):  
K. Dyabilin ◽  
M. Hron ◽  
J. Stöckel ◽  
F. Žáček

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1705
Author(s):  
In-Je Kang ◽  
Chang-Hyun Cho ◽  
Hyonu Chang ◽  
Soo-Ouk Jang ◽  
Hyun-Jae Park ◽  
...  

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.


2003 ◽  
Author(s):  
Y. Raitses ◽  
D. Staack ◽  
A. Dunaevsky ◽  
L. Dorf ◽  
N.J. Fisch

2018 ◽  
Vol 84 (3) ◽  
Author(s):  
V. Désangles ◽  
J. Milhone ◽  
C. Cooper ◽  
D. B. Weisberg ◽  
M. D. Nornberg ◽  
...  

The depletion of neutral helium atoms has been studied in an unmagnetised spherical plasma created by DC discharge in a multidipole confinement field. Knowing the neutral density profile is critical to predicting the equilibrium flow of such plasmas. A model of the emissivity due to electron-impact excitation of neutral atoms in the plasma has been derived and used to fit radiance measurements of several neutral transitions to extract the radial profile of neutral density for plasmas of varying temperature and density. We report a depletion of the core neutral density varying between negligible levels to 80 % of the edge neutral density depending on the input power and fuelling. The corresponding ionisation fraction varies between 30–80 % in the plasma core. A simple neutral diffusion model is sufficient to describe the shape of neutral density profile implied by the radiance measurements. We have used the measurements to include a drag force due to neutral charge-exchange collisions in simulations of driven plasma flow. The simulation predicts a better fit to Mach probe flow measurements when this neutral drag is accounted for. This work shows that accounting for a realistic neutral profile is important to predict the plasma flow geometry and its magnetohydrodynamics (MHD) stability.


Sign in / Sign up

Export Citation Format

Share Document