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Scientific paper - Original scientific paper
Nuclear symmetry energy and neutron skins derived from pygmy dipole resonances
Physical Review C - Nuclear Physics, 76 (2007), 5; 051603(R). https://doi.org/10.1103/PhysRevC.76.051603
(LAND Collaboration) Klimkiewicz, A.; Paar, Nils; Adrich, P.; Fallot, M.; Boretzky, K.; Aumann, T.; Cortina-Gil, D.; Pramanik, U. Datta; Elze, Th. W.; Emling, H.; Geissel, H.; Hellström, M.; Jones, K. L.; Kratz, J. V.; Kulessa, R.; Nociforo, C.; Palit, R.; Simon, H.; Surowka, G.; Summerer, K.; Vretenar, Dario; Walus, W. More authors...

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Klimkiewicz, A., Paar, N., Adrich, P., Fallot, M., Boretzky, K., Aumann, T. ... Walus, W. (2007). Nuclear symmetry energy and neutron skins derived from pygmy dipole resonances. Physical Review C - Nuclear Physics, 76. (5). doi: 10.1103/PhysRevC.76.051603

Klimkiewicz, A., et al. "Nuclear symmetry energy and neutron skins derived from pygmy dipole resonances." Physical Review C - Nuclear Physics, vol. 76, no. 5, 2007. https://doi.org/10.1103/PhysRevC.76.051603

Klimkiewicz, A., Nils Paar, P. Adrich, M. Fallot, K. Boretzky, T. Aumann, D. Cortina Gil, et al. "Nuclear symmetry energy and neutron skins derived from pygmy dipole resonances." Physical Review C - Nuclear Physics 76, no. 5 (2007). https://doi.org/10.1103/PhysRevC.76.051603

Klimkiewicz, A., et al. (2007) 'Nuclear symmetry energy and neutron skins derived from pygmy dipole resonances', Physical Review C - Nuclear Physics, 76(5). doi: 10.1103/PhysRevC.76.051603

Klimkiewicz A, Paar N, Adrich P, Fallot M, Boretzky K, Aumann T, and sur.. Nuclear symmetry energy and neutron skins derived from pygmy dipole resonances. Physical Review C - Nuclear Physics [Internet]. 2007 [cited 2024 July 23];76(5). doi: 10.1103/PhysRevC.76.051603

A. Klimkiewicz, et al., "Nuclear symmetry energy and neutron skins derived from pygmy dipole resonances", Physical Review C - Nuclear Physics, vol. 76, no. 5, 2007. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:665536. [Accessed: 23 July 2024]

Metadata
Title (english)Nuclear symmetry energy and neutron skins derived from pygmy dipole resonances
AuthorA. Klimkiewicz
AuthorNils Paar
AuthorP. Adrich
AuthorM. Fallot
AuthorK. Boretzky
AuthorT. Aumann
AuthorD. Cortina-Gil
AuthorU. Datta Pramanik
AuthorTh. W. Elze
AuthorH. Emling
AuthorH. Geissel
AuthorM. Hellström
AuthorK. L. Jones
AuthorJ. V. Kratz
AuthorR. Kulessa
AuthorC. Nociforo
AuthorR. Palit
AuthorH. Simon
AuthorG. Surowka
AuthorK. Summerer
AuthorDario Vretenar
AuthorW. Walus
CollaborationLAND Collaboration
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
By exploiting Coulomb dissociation of high-energy radioactive beams of the neutron-rich nuclei 129-132Sn and 133, 134Sb, their dipole-strength distributions have been measured. A sizable fraction of "pygmy" dipole strength, energetically located below the giant dipole resonance, is observed in all of these nuclei. A comparison with available pygmy resonance data in stable nuclei (208Pb and N=82 isotones) indicates a trend of strength increasing with the proton-to-neutron asymmetry. On theoretical grounds, employing the RQRPA approach, a one-to-one correlation is found between the pygmy strength and parameters describing the density dependence of the nuclear symmetry energy, and in turn with the thicknesses of the neutron skins. On this basis, by using the experimental pygmy strength, parameters of the nuclear symmetry energy (a4=32.0± ; 1.8 MeV and po=2.3± ; 0.8 MeV/fm3) are deduced as well as neutron-skin thicknesses Rn-Rp of 0.24± ; 0.04 fm for 132Sn and of 0.18± ; 0.035 fm for 208Pb, both doubly magic nuclei. Astrophysical implications with regard to neutron stars are briefly addressed.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysical Review C - Nuclear Physics
Numberingvol. 76, no. 5, 051603(R)
p-ISSN0556-2813
e-ISSN1089-490X
DOIhttps://doi.org/10.1103/PhysRevC.76.051603
URN:NBNurn:nbn:hr:217:665536
Publication2007
ProjectNumber: 119-1191005-1010
Title (croatian): Nuklearna struktura i nuklearna astrofizika
Leader: Dario Vretenar
Jurisdiction: Croatia
Funding stream: ZP
Document URLhttp://link.aps.org/doi/10.1103/PhysRevC.76.051603
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Public noteCopyright (2007) by the American Physical Society. Received 4 April 2007; published 29 November 2007.
Created on2019-10-18 15:44:48