Limiting current in a relativistic diode under the condition of magnetic insulation | Zendy

Mike R. Lopez | Zendy; Y. Y. Lau | Zendy; J.W. Luginsland | Zendy; David W. Jordan | Zendy; R. M. Gilgenbach | Zendy

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Limiting current in a relativistic diode under the condition of magnetic insulation

Author(s) -

Mike R. Lopez,

Y. Y. Lau,

J.W. Luginsland,

David W. Jordan,

R. M. Gilgenbach

Publication year - 2003

Publication title -

physics of plasmas

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.75

H-Index - 160

eISSN - 1089-7674

pISSN - 1070-664X

DOI - 10.1063/1.1613654

Subject(s) - physics , current (fluid) , current density , electron , limiting current , magnetic field , cycloid , electric current , limiting , diode , atomic physics , computational physics , condensed matter physics , nuclear physics , quantum mechanics , mechanical engineering , reducer , electrode , engineering , electrochemistry , thermodynamics

The maximum emission current density is calculated for a time-independent, relativistic, cycloidal electron flow in a diode that is under the condition of magnetic insulation. Contrary to conventional thinking, this maximum current is not determined by the space charge limited condition on the cathode, even when the emission velocity of the electrons is assumed to be zero. The self electric and magnetic fields associated with the cycloidal flow are completely accounted for. This maximum current density is confirmed by a two-dimensional, fully electromagnetic and fully relativistic particle-in-cell code. © 2003 American Institute of Physics

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