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Spectral statistics and the fine structure of the electric pygmy dipole resonance in N=82 nuclei

Enders, J. and Guhr, T. and Heine, A. and Neumann-Cosel, P. von and Ponomarev, V. Yu. and Richter, A. and Wambach, J. (2004):
Spectral statistics and the fine structure of the electric pygmy dipole resonance in N=82 nuclei.
In: Nuclear Physics A, p. 3, 741, ISSN 03759474, [Online-Edition: http://dx.doi.org/10.1016/j.nuclphysa.2004.05.014],
[Article]

Item Type: Article
Erschienen: 2004
Creators: Enders, J. and Guhr, T. and Heine, A. and Neumann-Cosel, P. von and Ponomarev, V. Yu. and Richter, A. and Wambach, J.
Title: Spectral statistics and the fine structure of the electric pygmy dipole resonance in N=82 nuclei
Language: English
Journal or Publication Title: Nuclear Physics A
Volume: 741
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) > A: 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) > A: Kernstrukturphysik > A2: Kernstrukturphysik mit virtuellen Photonen
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) > C: Fundamentale Experimente
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) > C: Fundamentale Experimente > C4: Quantenchaos und wellendynamisches Chaos
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 07:11
Official URL: http://dx.doi.org/10.1016/j.nuclphysa.2004.05.014
Identification Number: doi:10.1016/j.nuclphysa.2004.05.014
Alternative Abstract:
Alternative abstract Language
We study the statistical properties of the electric pygmy dipole resonance in four different isotones with neutron number N=82. These nuclei are 13856Ba, 14058Ce, 14260Nd, 14462Sm. The data set comprises 184 levels with spin and parity J[pi]=1- and their ground state B(E1) transition strengths. The statistics are found to be "mixed", i.e., in between the predictions of random matrix theory for correlated and uncorrelated spectra. Moreover, we calculate spectra and transition strengths in the quasiparticle phonon model (QPM). We compare experimental and theoretical findings. The incompleteness of the data sets and its impact on the results is discussed. A consistent picture emerges which yields an improved understanding of the statistical properties of the pygmy resonance.English
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