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Self-consistent relativistic QRPA studies of soft modes and spin-isospin resonances in unstable nuclei

Paar, N. and Nikšić, T. and Marketin, T. and Vretenar, D. and Ring, P. (2005):
Self-consistent relativistic QRPA studies of soft modes and spin-isospin resonances in unstable nuclei.
In: The European Physical Journal A, p. 531, 25, (S1), ISSN 1434-6001,
[Online-Edition: http://dx.doi.org/10.1140/epjad/i2005-06-057-5],
[Article]

Item Type: Article
Erschienen: 2005
Creators: Paar, N. and Nikšić, T. and Marketin, T. and Vretenar, D. and Ring, P.
Title: Self-consistent relativistic QRPA studies of soft modes and spin-isospin resonances in unstable nuclei
Language: English
Journal or Publication Title: The European Physical Journal A
Volume: 25
Number: S1
Divisions: DFG-Collaborative Research Centres (incl. Transregio)
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
05 Department of Physics
05 Department of Physics > Institute of Nuclear Physics
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 634: Nuclear Structure, Nuclear Astrophysics and Fundamental Experiments at Low Momentum Transfer at the Superconducting Darmstadt Accelerator (S-DALINAC)
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 634: Nuclear Structure, Nuclear Astrophysics and Fundamental Experiments at Low Momentum Transfer at the Superconducting Darmstadt Accelerator (S-DALINAC) > D: Theoretische Kernstrukturphysik
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 634: Nuclear Structure, Nuclear Astrophysics and Fundamental Experiments at Low Momentum Transfer at the Superconducting Darmstadt Accelerator (S-DALINAC) > D: Theoretische Kernstrukturphysik > D2: Kernstrukturuntersuchungen mit Relevanz für das experimentelle Programm
Date Deposited: 20 Jun 2011 07:12
Official URL: http://dx.doi.org/10.1140/epjad/i2005-06-057-5
Identification Number: doi:10.1140/epjad/i2005-06-057-5
Alternative Abstract:
Alternative abstract Language
The excitation phenomena in unstable nuclei are investigated in the framework of the relativistic quasiparticle random-phase approximation (RQRPA) in the relativistic Hartree-Bogoliubov model (RHB) which is extended to include effective interactions with explicit density-dependent meson-nucleon couplings. The properties of the pygmy dipole resonance (PDR) are examined in 132Sn and within isotopic chains, showing that already at moderate proton-neutron asymmetry the PDR peak energy is located above the neutron emission threshold. A method is suggested for determining the size of the neutron skin within an isotopic chain, based on the measurement of the excitation energies of the Gamow-Teller resonance relative to the isobaric analog state. In addition, for the first time the relativistic RHB + RQRPA model, with tensor ? meson-nucleon couplings, is employed in calculations of ?-decay half-lives of nuclei of the relevance for the r-process.English
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