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HK: Fachverband Hadronen und Kerne

HK 67: Poster Session

HK 67.39: Poster

Donnerstag, 19. März 2009, 14:00–16:00, Audi-Max

Constraint Skyrme-Hartree-Fock calculations in 3D — •Nikolaus Löbl¹, Joachim Maruhn¹, and Paul-Gerhard Reinhard² — ¹Goethe Universität, Frankfurt — ²Friedrich-Alexander-Universität, Erlangen-Nürnberg

We implemented several multipole constraints into a full 3D Skyrme-Hartree-Fock (SHF) code. The used algorithm was already successfully tested in axial SHF and relativistic mean-field(RMF)approaches. In a first step we added the constraints linearly to the energy functional, i.e. λ<Q>. The second step was to connect the added quantity to meaningful physical observables. Of course the <Q> should be the expectation value of a multipole operator, therefore the Lagrange-multiplier λ had to be adapted by iteration. It was a challenging task to reach suitable convergence in 3D. After a period of parameter optimization we were able to obtain deformation energy curves with a constraint on the Q₂₀ mass quadrupole moment. With an additional Q₂₂ constraint it was also possible to prepare triaxial states. Applications to be presented: cluster configurations in ¹⁶C and fission barriers in the actinide region.