DYNAMICALLY INDUCED SPIN POLARIZATION OF RESONANT AUGER ELECTRONS U. Hergenhahn$^\ast$, G. Snell$^{\ast,\sharp}$, M. Drescher$^\sharp$, B. Schmidtke$^\sharp$, M. Wiedenh\"oft$^\ast$, N. M\"uller$^\sharp$, U. Becker$^\ast$ and U.~Heinzmann$^\sharp$ $^\ast$Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany \\ $^\sharp$Universit\"at Bielefeld, Fakult\"at f\"ur Physik, 33501 Bielefeld, Germany Core hole creation without any particular orientation of the hole is shown to give rise to a strong Auger-electron spin polarization. This effect, known as dynamical Auger spin polarization, is found in the decay of the atomic Xe $4d_{5/2}^{-1}6p\,(J=1)$ state excited with linearly polarized light. Polarization values ranging from $-0.46$ to $0.57$ are found. For a particular decay channel, the ratio of the radiationless decay matrix elements and their relative phase, including its sign, are derived. Full Abstract