The Space Charge Density Calculation node computes space charge density and current density in the same way as the Electric Particle Field Interaction and Magnetic Particle Field Interaction Multiphysics nodes, respectively, but does not automatically include the accumulated variables as source terms when computing the fields. For modeling bidirectionally coupled particle-field interactions, consider using The Particle Field Interaction, Non-Relativistic Interface or The Particle Field Interaction, Relativistic Interface instead of the Space Charge Density Calculation node.
For more information about the calculation of the space charge density, see Space Charge Density Calculation in the section Theory for the Particle Field Interaction, Non-Relativistic Interface. For more information about the calculation of current density, see Current Density Calculation in the section Theory for the Magnetic Particle Field Interaction, Relativistic Interface.
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If Specify current is selected from the Particle release specification list in the physics interface Particle Release and Propagation section, the Charge multiplication factor n cannot be specified because the number of charged particles represented by each model particle is instead controlled by the Release current magnitude, which is specified in the settings for release features such as theRelease and Inlet nodes.
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