This title appears in the Scientific Report :
2009
Please use the identifier:
http://dx.doi.org/10.1142/S0218301309013750 in citations.
Pygmy Dipole Resonances
Pygmy Dipole Resonances
Electric dipole strength below the particle emission threshold both in stable nuclei and short-lived isotopes has received increasing interest due to its astrophysical impact. In analogy to the giant dipole resonance, this strength is commonly referred to as pygmy resonance. Coulomb dissociation of...
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Personal Name(s): | Krewald, S. |
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Speth, J. | |
Contributing Institute: |
Theorie der starken Wechselwirkung; IKP-3 |
Published in: | International journal of modern physics / E, 18 (2009) S. 1425 - 1451 |
Imprint: |
Singapore [u.a.]
World Scientific
2009
|
Physical Description: |
1425 - 1451 |
DOI: |
10.1142/S0218301309013750 |
Document Type: |
Journal Article |
Research Program: |
Physik der Hadronen und Kerne |
Series Title: |
International Journal of Modern Physics E
18 |
Subject (ZB): | |
Publikationsportal JuSER |
Electric dipole strength below the particle emission threshold both in stable nuclei and short-lived isotopes has received increasing interest due to its astrophysical impact. In analogy to the giant dipole resonance, this strength is commonly referred to as pygmy resonance. Coulomb dissociation of neutron-rich unstable isotopes and nuclear resonance fluorescence photon scattering have begun to provide systematic data on electric dipole strength in various isotope chains. We review the present state of the art of theoretical approaches and point out some open problems. We emphasize the necessity of a simultaneous theoretical treatment of the nucleon separation energies and the energetically low-lying dipole strength because the presently available data do not exclude a non-collective nature of the pygmy strength. |