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Nuclear excitations within microscopic EDF approaches: Pairing and temperature effects on the dipole response
Yuksel, E.1; Colo, G.2,3; Khan, E.4; Niu, Y. F.5,6
2019-12
Source PublicationEUROPEAN PHYSICAL JOURNAL A   Impact Factor & Quartile Of Published Year  The Latest Impact Factor & Quartile
ISSN1434-6001
EISSN1434-601X
Volume55Issue:12
page numbers10
AbstractIn the present work, the isovector dipole responses, both in the resonance region and in the low-energy sector, are investigated using the microscopic nuclear Energy Density Functionals (EDFs). The self-consistent QRPA model based on Skyrme Hartree Fock BCS approach is applied to study the evolution of the isovector dipole strength by increasing neutron number and temperature. First, the isovector dipole strength and excitation energies are investigated for the Ni isotopic chain at zero temperature. The evolution of the low-energy dipole strength is studied as a function of the neutron number. In the second part, the temperature dependence of the isovector dipole excitations is studied using the self-consistent finite temperature QRPA, below and above the critical temperatures. It is shown that new excited states become possible due to the thermally occupied states above the Fermi level, and opening of the new excitations channels. In addition, temperature leads to fragmentation of the low-energy strength around the neutron separation energies, and between 9 and 12 MeV. We find that the cumulative sum of the strength below E <= 12MeV. The analysis of the transition densities in the low-energy region shows that the proton and neutron transition densities display a mixed pattern: both isoscalar and isovector motion of protons and neutrons are obtained inside nuclei, while the neutron transition density is dominant at the surface region.
PublisherSPRINGER
DOI10.1140/epja/i2019-12918-8
Indexed BySCIE
Language英语
Funding ProjectEuropean Union[654002]
WOS Research AreaPhysics
WOS SubjectPhysics, Nuclear ; Physics, Particles & Fields
WOS IDWOS:000500765200008
PublisherSPRINGER
Original Document TypeArticle
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/416873
Collection兰州大学
核科学与技术学院
Corresponding AuthorKhan, E.
Affiliation
1.Yildiz Tech Univ, Dept Phys, TR-34220 Istanbul, Turkey
2.Univ Milan, Dipartimento Fis, Via Celoria 16, I-20133 Milan, Italy
3.Ist Nazl Fis Nucl, Sez Milano, Via Celoria 16, I-20133 Milan, Italy
4.Univ Paris Sud, Univ Paris Saclay, Inst Phys Nucl, IN2P3,CNRS, F-91406 Orsay, France
5.Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Gansu, Peoples R China
6.Horia Hulubei Natl Inst Phys & Nucl Engn, ELI NP, 30 Reactorului St, RO-077125 Bucharest, Romania
Recommended Citation
GB/T 7714
Yuksel, E.,Colo, G.,Khan, E.,et al. Nuclear excitations within microscopic EDF approaches: Pairing and temperature effects on the dipole response[J]. EUROPEAN PHYSICAL JOURNAL A,2019,55(12).
APA Yuksel, E.,Colo, G.,Khan, E.,&Niu, Y. F..(2019).Nuclear excitations within microscopic EDF approaches: Pairing and temperature effects on the dipole response.EUROPEAN PHYSICAL JOURNAL A,55(12).
MLA Yuksel, E.,et al."Nuclear excitations within microscopic EDF approaches: Pairing and temperature effects on the dipole response".EUROPEAN PHYSICAL JOURNAL A 55.12(2019).
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