A Novel Method to Determine Magnetic Fields in low-density Plasma e.g. Solar Flares Facilitated Through Accidental Degeneracy of Quantum States in Fe${}^{9+}$

Wenxian Li, Jon Grumer, Yang Yang +8

We propose a new method to determine magnetic fields, by using the magnetic-field induced electric dipole transition $3p^{4}3d{}^4{\mathrm{D}}_{7/2}$ $\to$ $3p^5\, ^2\mathrm{P}…