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Low-energy dipole excitations towards the proton drip-line: Doubly magic 48Ni

Paar, N. and Papakonstantinou, P. and Ponomarev, V. Yu. and Wambach, J. (2005):
Low-energy dipole excitations towards the proton drip-line: Doubly magic 48Ni.
In: Physics Letters B, p. 195, 624, (3-4), ISSN 03702693,
[Online-Edition: http://dx.doi.org/10.1016/j.physletb.2005.08.043],
[Article]

Item Type: Article
Erschienen: 2005
Creators: Paar, N. and Papakonstantinou, P. and Ponomarev, V. Yu. and Wambach, J.
Title: Low-energy dipole excitations towards the proton drip-line: Doubly magic 48Ni
Language: English
Journal or Publication Title: Physics Letters B
Volume: 624
Number: 3-4
Divisions: 05 Department of Physics > Institute of Nuclear Physics
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
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
05 Department of Physics
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)
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 20 Jun 2011 07:12
Official URL: http://dx.doi.org/10.1016/j.physletb.2005.08.043
Identification Number: doi:10.1016/j.physletb.2005.08.043
Alternative Abstract:
Alternative abstract Language
The properties of the low-energy dipole response are investigated for the proton-rich doubly magic nucleus 48Ni, in a comparative study of two microscopic models: fully self-consistent relativistic random-phase approximation (RRPA) based on the novel density-dependent meson-exchange interactions, and continuum random-phase approximation (CRPA) using Skyrme-type interactions with the continuum properly included. Both models predict the existence of the low-energy soft mode, i.e., the proton pygmy dipole resonance (PDR), for which the transition densities and RPA amplitudes indicate the dynamics of loosely bound protons vibrating against the rest of the nucleons. The CRPA analysis indicates that the escape width for the proton PDR is rather large, as a result of the coupling to the continuum.English
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