Spin polarization of the Ar* 2p?11/2 4s and 2p?11/2 3d resonant Auger decay.

The spin-resolved Auger decay of the Ar 2p[?]11/2 3d state was measured at moderate energy resolution and compared with the decay of the 2p[?]11/2 4s. The former shows a lower transferred spin polarization and a similar, if not higher, dynamical spin polarization, supporting the statement that a fully resolved spectrum is not a necessary condition for observing dynamical spin polarization. An interpretation of the spin polarization as configuration interaction induced effect in the final ionic state leads to partial agreement with our relativistic distorted wave calculation utilizing a 36 configuration state function basis set. Comparison of the experimental and numerical results leads to ambiguities for at least one Auger line. A hypothetical, qualitative interpretation is discussed. [ABSTRACT FROM AUTHOR]