Electromagnetic dipole and Gamow-Teller responses of even and odd 90-9440Zr isotopes in QRPA calculations with the D1M Gogny force

• Published in: The European physical journal. A, Hadrons and nuclei Vol. 53; no. 8
• Main Authors: Deloncle, I., Péru, S., Martini, M.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 2017
• Subjects: Finite range effective interactions and associated many-body methods - A tribute to Daniel Gogny; Hadrons; Heavy Ions; Nuclear Fusion; Nuclear Physics; Particle and Nuclear Physics; Physics; Physics and Astronomy; Regular Article - Theoretical Physics
• ISSN: 1434-6001; 1434-601X
• DOI: 10.1140/epja/i2017-12354-x

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In this paper we present theoretical results on the dipole response in the proton spin-saturated
90-94
Zr 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
M
1 nuclear spin-flip resonance.