Magnetic-field-dependent angular distributions and linear polarizations of emissions from the 2p53s3P2o state in Ne-like ions

We have investigated the effect of an external magnetic field on the angular distribution and the linear polarization of the 2s²2p⁵3s3P₂^o→2s²2p⁶1S₀ emission line in Ne-like ions. Since an electric dipole decay channel is opened by the magnetic field and competes with the inherent magnetic quadrupole transition, these properties strongly depend on the magnetic field strength, B. As an example, we discuss in some detail this transition in neonlike magnesium. This is of special interest, since the B-dependent angular distributions and linear polarization degrees are potentially unique diagnostic tools for the magnetic field in different plasmas.