Spin-Flip Transitions For The Resonantly Excited XE*(6p3/2)N5O2,3O2,3 Auger Spectrum

Abstract

We investigate the resonant Xe(6p3/2)N5O2, 3O2, 3 Auger transitions after photoexcitation. Here, we apply a relativistic distorted wave approximation (RDWA) to evaluate the relevant parameters of angular distribution and spin polarization which characterize the Auger decay dynamics. While, the outer Rydberg electron may undergo a 6p3/2 → 6p1/2 spin-flip transition during the resonant Auger emission, our calculation includes additional configuration state functions (CSF) to allow for the inclusion of the spin-flip transitions which, on the other hand, yield additional correlation due to the extended configuration interaction between the different CSF generating the final atomic state function. A total of 21 CSF is included. Exchange interaction with the continuum is accounted for. Our results are compared to previous calculations and to experimental results. Of particular interest are the spin-flip transitions to Jf = 1/2 final states. According to our recently derived propensity rules these Auger lines should show a large dynamic spin polarization. I. e., in the intermediate ionic state an alignment is generated which can be transformed by the Auger decay dynamics into a dynamic spin polarization of the Auger electron. First experimental proof has been given for one Auger line, only recently. Our numerical RDWA results predict a large dynamic spin polarization even for the Jf = 1/2 final states of the spin-flip transitions. As is shown, this is caused by a large shift of the scattering phase of the emitted es1/2 partial waves.