Heidelberg 2015 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 16: Structure and Dynamics of Nuclei 3

HK 16.5: Vortrag

Montag, 23. März 2015, 18:00–18:15, T/HS2

Polarization correlations from electron-impact excitation of multipolarity L=3-5 in 208Pb and 89Y nuclei — •Doris Jakubassa-Amundsen — Mathematics Institute, LMU Munich, Germany

The DWBA formalism is used to calculate differential excitation cross sections and to predict spin asymmetries for the scattering of spin-polarized electrons from heavy nuclei. Polarization correlations between the incoming and the scattered electron are a sensitive tool to study the various nuclear models inherent in the transition densities. By selecting the lowest 3- and 5- states of 208Pb it is found that the spin asymmetries for elastic and inelastic electron scattering are comparably large as long as the contribution from the current-current interaction is negligible. The investigation of the 89Y nucleus with its large magnetic transition densities shows, however, a strong quenching of the transverse polarization correlations at backward scattering angles.