On Trapped-Particle Effect on Shielding in Collisionless Plasmas

The contribution of charged particles moving on finite orbits near a charged spherical body to shielding of the body is discussed. By means of a numerical experiment simulating the process of charging of an absorbing sphere in plasma, it is shown that the net charge of the trapped-particle cloud ari...

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Bibliographic Details
Published in:IEEE transactions on plasma science 2018-03, Vol.46 (3), p.631-635
Main Authors: Krasovsky, Victor L., Kiselyov, Alexander A.
Format: Article
Language:English
Subjects:
Ions
Mathematical model
Numerical models
Physics
PIC simulation
Plasmas
shielding
Space charge
Space vehicles
trapping
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Summary:The contribution of charged particles moving on finite orbits near a charged spherical body to shielding of the body is discussed. By means of a numerical experiment simulating the process of charging of an absorbing sphere in plasma, it is shown that the net charge of the trapped-particle cloud arising around the sphere can reach very high values. The shielding under these conditions becomes strongly nonlinear in contrast to Debye shielding.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2018.2795101