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Investigation of the electric dipole (E1) excitations in \(^{\mathrm {181}}\)Ta nucleus

  • Regular Article – Theoretical Physics
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Abstract

E1 transition properties such as the reduced transition probabilities, excitation energies and photon–absorption cross-sections have been theoretically investigated for \(^{\mathrm {181}}\)Ta nucleus within the framework of Translational and Galileo Invariant-Quasiparticle Phonon Nuclear Model (TGI-QPNM). The model Hamiltonian includes the single-particle and the isovector dipole–dipole interaction terms along with the restoration forces. The strength of the isovector dipole–dipole interaction has been chosen to be \(\chi = 500/\hbox {A}^{\mathrm {5/3}} MeV \cdot fm^{-2}\). Theoretical calculations show that in addition to the M1 excitations, there is considerable amount of E1 transitions especially between 2.6–3 MeV, which gives remarkable contribution to the fragmentation in the low-energy region of the dipole spectrum. Thus, the agreement between theory and experiment in terms of the fragmentation increases. Furthermore, the photon–absorption cross-sections in the Pigmy Dipole Resonance (PDR) region below the neutron separation energy (\(S_{n}\)) is compatible with experimental data.

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Data Availability Statement

This manuscript has no associated data or the data will not be deposited. [Authors’ comment: The datasets generated during the current study are available from the corresponding author on reasonable request.]

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Acknowledgements

This work was supported by Scientific and Technological Research Council of Turkey (TUBITAK) (Project no. 118F094), Research Fund of the Sakarya University (Project No. 2020-7-25-56) and Council of Higher Education (YÖK) 100/2000 CoHE PhD Scholarship.

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Authors and Affiliations

  1. Physics Department, Faculty of Science and Arts, Sakarya University, Sakarya, Turkey

    E. Tabar, H. Yakut, G. Hoşgör, E. Kemah & H. Quliyev

  2. Azerbaijan National Academy of Aviation, Baku, Azerbaijan

    A. A. Kuliev

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  1. E. Tabar
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  2. H. Yakut
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  3. A. A. Kuliev
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  4. G. Hoşgör
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  5. E. Kemah
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  6. H. Quliyev
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Corresponding author

Correspondence to G. Hoşgör.

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Communicated by Mark Caprio

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Tabar, E., Yakut, H., Kuliev, A.A. et al. Investigation of the electric dipole (E1) excitations in \(^{\mathrm {181}}\)Ta nucleus. Eur. Phys. J. A 56, 271 (2020). https://doi.org/10.1140/epja/s10050-020-00274-x

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  • DOI: https://doi.org/10.1140/epja/s10050-020-00274-x

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