Abstract Collection of electrons by a long conducting cylinder in a flowing plasma is studied by means of numerical simulations. The plasma flow simulates the relative motion between a spacecraft and plasma. The sheath structures and the levels of electron current collections for the cases with and without an ambient magnetic field ( B ) are studied. It is found that for the flow perpendicular to the magnetic field, the current is considerably enhanced depending on the relative drift velocity. In the case of a non-zero magnetic field perpendicular to the cylinder axis, the potential structure is a two-dimensional double layer with dimensions L ⊥ ⪡ L |, where L⊥ and L| are the dimensions perpendicular and parallel to B , respectively. L⊥ is found to be the current limiting radius given by the Parker-Murphy model. For the flow along B , the electron current is found to be smaller than that for the flow perpendicular to B . This is explained in terms of the potential structures.


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    Title :

    Current collection through the transport of electrons across magnetic field lines


    Contributors:
    Singh, N. (author) / Vashi, B.I. (author)

    Published in:

    Publication date :

    1992-01-01


    Size :

    4 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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