Spin Polarized Auger Electrons: The XeM4,5N4,5

Abstract

The spin polarization of the Xe M 4,5 N 4,5 N 4,5 Auger electrons was measured after photoionization of free atoms by circularly polarized synchrotron radiation at 834.5 eV. Significant polarization effects were found across the whole Auger group. With the hole state orientation determined from the spin polarization of the M 4 1 S 0 Auger line the intrinsic Auger parameters were evaluated for all lines. The orientation derived from the 1 S 0 Auger line is consistent with the measured spin polarization of the 3d 3͞2 photoline in good agreement with the two-step model of the Auger decay. [S0031-9007(96)

Space-, time- and spin-resolved photoemission

“…The development combined the know-how on spin detection from the Bielefeld group with the excellent ToF expertise of U. Becker et al. This instrument was very successful in the spin analysis of Auger electrons in gas-phase experiments [89]. Applying the definition of the multichannel figure of merit from Section 3 we arrive at FoM 1D = N .…”

Coherence and correlations in photoinduced Auger and fluorescence cascades in atoms

“…Starting from the pioneering experiments by Stoppmanns et al (1992), Kuntze et al (1993Kuntze et al ( , 1994a and David et al (1994David et al ( , 1998) (see also review papers by Heinzmann (1996a, b)), spin polarization measurements for Auger and resonant Auger electrons have added a new dimension to the investigation of the Auger emission of atoms and provide a very sensitive test-ground for the theoretical description of autoionization processes (Kuntze et al, 1994b;Snell et al, 1996Snell et al, , 1999aSnell et al, , b, 2002Hergenhahn et al, 1999;Schmidtke et al, 2000aSchmidtke et al, , 2001Drescher et al, 2003;Lohmann et al, 2005). Moreover, spin resolved experiments have been recognized as a necessary component for performing a complete experiment (see Section 3.3).…”

Sudden Interchannel Interaction in the Tl6pIonization above the5dThreshold

“…A measurement of the dynamical spin polarization has been included in the diagram as a diamond using Eq. (14). Observations of b and the asymmetry are transformed into the ratio of the dipole matrix elements g fp (d) and the asymptotic phase difference D fp (c).…”

“…For the measurement of P dyn the Mott-scattering target is positioned at Q 45 ± and the detectors measure the spin component parallel to k. The details of this technique are explained in [14].…”