Diagnostics and interpretation of the electrical current distribution in an MPD-thruster

1972 ◽  
Author(s):  
W. SCHOCK
Keyword(s):  
Current Distribution ◽  
Electrical Current

scholarly journals Modeling of a Plasma Antenna with Inhomogeneous Distribution of Electron Density

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Zong-sheng Chen ◽  
Li-fang Ma ◽  
Jia-chun Wang
Keyword(s):  
Transmission Line ◽  
Electron Density ◽  
Radiation Pattern ◽  
Current Distribution ◽  
Electrical Current ◽  
Inhomogeneous Distribution ◽  
Equivalent Theory ◽  
Plasma Antenna ◽  
Density Distributions ◽  
Radiation Direction

The distribution of the electron density along a plasma antenna can influence the antenna’s performance. But little has been done in this regard in former studies. In this paper, a model of a practical plasma antenna with an inhomogeneous distribution of electron density is founded according to the transmission-line equivalent theory of a metal monopole, from which the current distribution and the radiation pattern of a plasma antenna with appropriate parameters are calculated. The results show that the electrical current distribution, the maximum radiation direction, and the beamwidth of a plasma antenna vary with electron density distributions. To validate the model, the plasma antenna with the same parameters is also simulated based on electromagnetic software HFSS. It is found that the results from the two ways are almost consistent.

Artefacts in MR images of electrical current distribution

1997 ◽  
Vol 42 (12) ◽  
pp. 2481-2491 ◽  
Author(s):  
Humberto R Gamba ◽  
David T Delpy
Keyword(s):  
Current Distribution ◽  
Electrical Current ◽  
Mr Images

scholarly journals Direct imaging of an inhomogeneous electric current distribution using the trajectory of magnetic half-skyrmions

2020 ◽  
Vol 6 (6) ◽  
pp. eaay1876 ◽  
Author(s):  
Senfu Zhang ◽  
Xichao Zhang ◽  
Junwei Zhang ◽  
Arnab Ganguly ◽  
Jing Xia ◽  
...  
Keyword(s):  
Current Distribution ◽  
Current Density ◽  
Electrical Current ◽  
Industrial Applications ◽  
Direct Imaging ◽  
Hall Angle ◽  
Fundamental Research ◽  
Density Vector ◽  
Curved Track ◽  
Moriya Interaction

The direct imaging of current density vector distributions in thin films has remained a daring challenge. Here, we report that an inhomogeneous current distribution can be mapped directly by the trajectories of magnetic half-skyrmions driven by an electrical current in Pt/Co/Ta trilayer, using polar magneto-optical Kerr microscopy. The half-skyrmion carries a topological charge of 0.5 due to the presence of Dzyaloshinskii-Moriya interaction, which leads to the half-skyrmion Hall effect. The Hall angle of half-skyrmions is independent of current density and can be reduced to as small as 4° by tuning the thickness of the Co layer. The Hall angle is so small that the elongation path of half-skyrmion approximately delineates the invisible current flow as demonstrated in both a continuous film and a curved track. Our work provides a practical technique to directly map inhomogeneous current distribution even in complex geometries for both fundamental research and industrial applications.

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