constEmField
constEMField:
Kind of EmField that defines a constant field.
constEMField Parameters
- elecField (float vector)
- The electric field. 
- magField (float vector)
- The magnetic field. 
- hasB (option, default=true)
- Flag to specify that the magnetic field (if present) will be used in the species update step. 
Example constEMField Block
<EmField constEM>
    kind = constEmField
    elecField = [0. 0. 0.]
    magField = [0. 0. 0.]
</EmField>