https://doi.org/10.1140/epja/i2017-12354-x
Regular Article - Theoretical Physics
Electromagnetic dipole and Gamow-Teller responses of even and odd 90-94 40Zr isotopes in QRPA calculations with the D1M Gogny force
1
CSNSM, CNRS and Université Paris-Sud, F-91405, Orsay Campus, France
2
CEA, DAM, DIF, F-91297, Arpajon, France
3
ESNT, CEA-Saclay, DSM, Irfu, Service de Physique Nucléaire, F-91191, Gif-sur-Yvette Cedex, France
* e-mail: sophie.peru-desenfants@cea.fr
Received:
26
July
2016
Accepted:
21
July
2017
Published online:
28
August
2017
In this paper we present theoretical results on the dipole response in the proton spin-saturated 90-94Zr isotopes. The electric and magnetic dipole excitations are obtained in Hartree-Fock-Bogolyubov plus Quasi-particle Random Phase Approximation (QRPA) calculations performed with the D1M Gogny force. A pnQRPA charge exchange code is used to study the Gamow-Teller response. The results on the pygmy, the giant dipole resonances as well as those on the magnetic nuclear spin-flip excitation and the Gamow-Teller transitions are compared with available experimental or theoretical information. In our approach, the proton pairing plays a role in the phonon excitations, in particular in the M1 nuclear spin-flip resonance.
© SIF, Springer-Verlag GmbH Germany, 2017