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Scientific paper - Original scientific paper
Isoscalar and Isovector Splitting of Pygmy Dipole Structures
Physical Review Letters, 103 (2009), 3; 032502. https://doi.org/10.1103/PhysRevLett.103.032502
Paar, Nils; Niu, Y. F.; Vretenar, Dario; Meng, Jie

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Paar, N., Niu, Y. F., Vretenar, D. & Meng, J. (2009). Isoscalar and Isovector Splitting of Pygmy Dipole Structures. Physical Review Letters, 103. (3). doi: 10.1103/PhysRevLett.103.032502

Paar, Nils, et al. "Isoscalar and Isovector Splitting of Pygmy Dipole Structures." Physical Review Letters, vol. 103, no. 3, 2009. https://doi.org/10.1103/PhysRevLett.103.032502

Paar, Nils, Y. F. Niu, Dario Vretenar and Jie Meng. "Isoscalar and Isovector Splitting of Pygmy Dipole Structures." Physical Review Letters 103, no. 3 (2009). https://doi.org/10.1103/PhysRevLett.103.032502

Paar, N., et al. (2009) 'Isoscalar and Isovector Splitting of Pygmy Dipole Structures', Physical Review Letters, 103(3). doi: 10.1103/PhysRevLett.103.032502

Paar N, Niu YF, Vretenar D, Meng J. Isoscalar and Isovector Splitting of Pygmy Dipole Structures. Physical Review Letters [Internet]. 2009 [cited 2024 November 26];103(3). doi: 10.1103/PhysRevLett.103.032502

N. Paar, Y. F. Niu, D. Vretenar and J. Meng, "Isoscalar and Isovector Splitting of Pygmy Dipole Structures", Physical Review Letters, vol. 103, no. 3, 2009. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:159646. [Accessed: 26 November 2024]

Metadata
Title (english)Isoscalar and Isovector Splitting of Pygmy Dipole Structures
AuthorNils Paar
AuthorY. F. Niu
AuthorDario Vretenar
AuthorJie Meng
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
The electric dipole response of 140Ce is investigated using the fully consistent relativistic quasiparticle random phase approximation. By analyzing the isospin structure of the E1 response, it is shown that the low-energy (pygmy) strength separates into two segments with different isospin character. The more pronounced pygmy structure at lower energy is composed of predominantly isoscalar states with surface-peaked transition densities. At somewhat higher energy the calculated E1 strength is primarily of isovector character, as expected for the low-energy tail of the giant dipole resonance. The results are in qualitative agreement with those obtained in recent (gamma, gamma') and (alpha, alpha'gamma) experiments, and provide a simple explanation for the splitting of low-energy E1 strength into two groups of states with different isospin structure and radial dependence of the corresponding transition densities.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysical Review Letters
Numberingvol. 103, no. 3, 032502
p-ISSN0031-9007
e-ISSN1079-7114
DOIhttps://doi.org/10.1103/PhysRevLett.103.032502
URN:NBNurn:nbn:hr:217:159646
Publication2009
Document URLhttp://link.aps.org/doi/10.1103/PhysRevLett.103.032502
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Public noteCopyright (2009) by the American Physical Society. Received 14 April 2009; revised manuscript received 29 May 2009; published 17 July 2009.
Created on2019-10-20 18:38:35