Darmstadt 2008 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 36: Kern- und Teilchen-Astrophysik

HK 36.4: Vortrag

Donnerstag, 13. März 2008, 17:45–18:00, 2B

Microscopic calculation of phase shifts and astrophysical S-factors using fermionic molecular dymamics — •Robert Cussons — Gesellschaft für Schwerionenforschung, Planckstr. 1, 64291 Darmstadt, Germany

Scattering states have been calculated in a microscopic and unified way using Fermionic Molecular Dynamics. The realistic Argonne-V18 interaction was transformed into a phase shift equivalent effective interaction, V_UCOM, by using the Unitary Correlation Operator Method to include short range correlations. Both ground states of the nuclei in the incoming and outgoing channels and the phase shifts were calculated microscopically for the elastic scattering reactions: ⁴He(n, n)⁴He and ³He(α, α)³He. The S-factor for the reaction ³He(α, γ)⁷Be, which is of astrophysical interest in the ppII chain, is compared to data.