Electromagnetic dipole transitions below 4 MeV in odd-neutron 161,163Dy

Tabar, E.; Yakut, H.; Hoşgör, G.; Kemah, E.

doi:10.1016/j.nuclphysa.2021.122252

Cited by 8 publications

(10 citation statements)

References 61 publications

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“…In the employed model, by selecting suitable separable, effective isoscalar and isovector forces, the rotational invariance (RI-) was restored to describe the magnetic dipole (M1) excitations [17,[37][38][39], as well as the translational and Galilean invariance (TGI-) [9,19] for calculating the E1 excitations. This model also satisfactorily described the fragmentation of electric and magnetic dipole strength in well-deformed [40][41][42][43][44][45][46][47][48][49][50][51], transitional, and γ-soft [9,10,13,19] nuclei, as well as the giant dipole resonance and pygmy dipole resonance [40, 42-44, 46, 49, 50] in deformed nuclei [17, 37, 40-48, 52, 53].…”

Section: Introductionmentioning

confidence: 87%

Dipole responses in γ−soft ^124–134Xe in the spectroscopic energy region

Quliyev¹,

Guliyev²,

Kuliev³

2022

J. Phys. G: Nucl. Part. Phys.

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This study aimed to systematically investigate the low-lying dipole states of even-even 124-134Xe isotopes using the quasi-particle random phase approximation (QRPA) method. Where in all the studied xenon isotopes, electric and magnetic dipole responses were clearly predicted. The calculations predict mainly a scissors mode, while the strength of weakly deformed 132, 134Xe was small compared to moderately deformed 124-130Xe isotopes, where electric dipole excitations make their own contributions as well. The obtained results are consistent with the available experimental data. Since it was not possible to experimentally determine the parity of dipole states here trougth comparison our results with experiment, we investigated the role of electric and magnetic dipole excitations in forming the spectrum. After comparing the obtained results with the experimentally derived ones, the natures of several observed spin- and parity-unknown excitations were determined.

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Section: Introductionmentioning

confidence: 87%

Dipole responses in γ−soft ^124–134Xe in the spectroscopic energy region

Quliyev¹,

Guliyev²,

Kuliev³

2022

J. Phys. G: Nucl. Part. Phys.

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“…The wave function for odd-A deformed nuclei, which takes into account the coupling of quasiparticles with phonons, is defined as follows [64,69]:…”

Section: Pairing Parametersmentioning

confidence: 99%

“…This appendix gives some details about the RI-QPNM formalism that was applied to study magnetic dipole (M1) transitions. For an odd-mass deformed nucleus, the Hamiltonian system contains an axially symmetric average field, monopole pairing, residual spin-spin force, and restoration terms (For additional information, see [64,70,71,[100][101][102]).…”

Section: Appendix B Ri-qpnm Of Magnetic Dipole Transitions In Odd-mas...mentioning

confidence: 99%

“…This appendix details the formalism for the TGI-QPNM that was applied to study electric dipole (E1) transitions. For an odd-mass deformed nucleus, the Hamiltonian system comprises the pairing and the dipole-dipole interactions, depending on the symmetry conditions (for additional information, see [64,69]).…”

Section: Data Availability Statementmentioning

confidence: 99%

“…For this study, we applied a quasiparticle phonon nuclear model (QPNM) approach based on rotational invariant (RI-), translational, and Galilean invariant (TGI-) requirements, and this allowed us to analyze the spectral properties of the excited J π =1 − and 1 + states within the same excitation energy region [62][63][64][65][66][67][68][69][70][71]. This extended version of the QPNM [72] formalism considers transitions of the E1 and M1 types.…”

Section: Introductionmentioning

confidence: 99%

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Microscopic calculation of the electromagnetic dipole strength for ^239,243Pu isotopes

Yakut¹,

Tabar²,

Kemah³

et al. 2022

J. Phys. G: Nucl. Part. Phys.

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This work investigates the electric and magnetic dipole (E1 and M1) responses for 239,243Pu isotopes based on the quasiparticle phonon nuclear model (QPNM) by adding the residual interactions for addressing the violations of rotational, translational, and Galilean symmetries caused by the mean-field approach, for the first time. We focus on the E1 and M1 dipole strengths and photo-absorption cross sections up to 20 MeV, and the results reveal that the giant dipole resonance (GDR) best describes the experimental trend with a ratio of 95%. It appears that most of the E1 strength is found at Ex=8–20 MeV, but the total B(E1)↑ strength for the pygmy dipole resonance (PDR) at Ex=4–8 MeV accounts for some 1.83 e2fm2, which in turn corresponds to 2% of the Thomas–Reiche–Kuhn (TRK) sum rule. Furthermore, the resultant total B(M1)↑ value for the scissors mode strength below 4 MeV is 5.65 , which is lower than that of the Oslo data (10.1(15) ). However, the theoretically predicted scissors resonance structure with two peaks in the 1–3.5 MeV energy range exhibits a similar trend to that found in the Oslo data.

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