1111.3780 (R. C. Tautz)
R. C. Tautz
Using the conventional approach of superposing plane waves, it is not
possible to create a strictly isotropic turbulent magnetic field structure that
obeys all physical constraints, which are (i) equal mean of all magnetic field
components; (ii) isotropy of the wave vectors; and (iii) vanishing divergence
of the magnetic field. Such magnetic fields are widely implemented in
test-particle Monte-Carlo simulations, which are used to obtain (i) scattering
mean free paths of charged particles; (ii) field line diffusion coefficients.
It is shown that, while the turbulent magnetic field strength plays an
important role for the results, such does not seem to be the case for a
non-zero magnetic field divergence and/or the isotropy of the wave vectors.
View original:
http://arxiv.org/abs/1111.3780
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