Manifestation of three-body forces in f7/2-shell nucleiA. Volya
Department of Physics, Florida State University - Tallahassee, FL 32306-4350, USA
received 23 March 2009; accepted in final form 22 May 2009; published June 2009
published online 22 June 2009
The traditional nuclear shell model approach is extended to include many-body forces. The empirical Hamiltonian with a three-body force is constructed for the identical nucleons on the 0f7/2 shell. Manifestations of the three-body force in spectra, binding energies, seniority mixing, particle-hole symmetry, electromagnetic and particle transition rates are investigated. It is shown that in addition to the usual expansion of the valence space within the tranditional two-body shell model, the three-body component in the Hamiltonian can be an important part improving the quality of the theoretical approach.
21.45.Ff - Three-nucleon forces.
21.60.Cs - Shell model.
21.30.-x - Nuclear forces.
© EPLA 2009