Bonn 2010 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 56: Struktur und Dynamik von Kernen IX

HK 56.6: Vortrag

Donnerstag, 18. März 2010, 18:15–18:30, HG VII

Charge Exchange Excitation in Nuclei — •Abdul A. Ataie and Horst Lenske — Institut für Theoretische Physik, Universität Giessen

We study charge-exchange transitions in exotic nuclei. The ground state is calculated with a HFB ansatz which is then used to calculate the charge exchange excitations by a QRPA calculation. We use an extended QRPA ansatz which, besides pairing effects, also accounts for the coupling to the continuum and dissipative contributions. The spectral distributions and transition probabilities are extracted from the polarization propagator. The polarization propagator is calculated by solving directly the Dyson-equation. Results of ⁵⁶Fe for natural and unnatural parity excitations are discussed. Applications to neutrino scattering are indicated.

Supported by DFG, HIC for FAIR and GSI.