-material: Conductivities of electric materials

This section enables the changing of the conductivities of materials with type= electric. These conductivities are used for computing the wall losses in the section -losses.

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 # section -material                                                          #
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 # material=  1        epsr....: infinity      kappa    =      58.0e+6        #
 # type: electric         xepsr: infinity        xkappa =      58.0e+6        #
 #                        yepsr: infinity        ykappa =      58.0e+6        #
 #                        zepsr: infinity        zkappa =      58.0e+6        #
 #                     muer....:       0.0     mkappa   :       0.0           #
 #                        xmuer:       0.0       xmkappa:       0.0           #
 #                        ymuer:       0.0       ymkappa:       0.0           #
 #                        zmuer:       0.0       zmkappa:       0.0           #
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 # return, help, ls                                                           #
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• material
  The material index of the material whose conductivity is to be changed.
• kappa
  The electric conductivity of the material in MHO/m (1/Ohm/m).
• xkappa, ykappa, zkappa
  The x-, y-, z-value of an anisotropic material. Only diagonal kappa matrices can be specified.

The entries for type, epsr, muer, mkappa cannot be changed.
Example To specify that wall loss computations in the section -losses shall use a conductivity of $30 \times 10^6$ for the material '10', we say:

 -material
    material= 10
    kappa= 30e6