|Relaxation Phenomena Due to Collisions with Neutral Perturbers in Hyperfine Structure Multiplets
|526, Solar Polarization Workshop 8
|Landi Degl'Innocenti, E.; Belluzzi, L.
|A connection is established between the depolarizing rates, due to
collisions with neutral perturbers, of the statistical tensors of a
hyperfine structure multiplet and those of the statistical tensors of the
parent fine structure level.
This connection is described by a simple equation involving a
12-j symbol of the second kind. An application is performed to derive an
analytical expression for the scattering matrix of a hyperfine structured
two-level atom in the presence of collisions and a magnetic field.
Numerical results are presented.