Translational and Galilean Invariant Quasiparticle Phonon Nuclear Model (TGI-QPNM) for electric dipole (E1) transitions in odd-mass deformed nuclei

Tabar, E.; Yakut, H.; Kuliev, A.A.; Hoşgör, G.; Kemah, E.; Quliyev, H.

doi:10.1016/j.nuclphysa.2020.121885

Cited by 20 publications

(44 citation statements)

References 72 publications

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“…Our previous studies [62,65,[67][68][69] predicted a broadening in the GDR's width at smoothing parameter Δ due to the GDR splitting into two distinct components that correspond to the ΔK=0 and ΔK=1 branches for odd-A deformed nuclei. The photoabsorption cross-section demonstrates a similar trend in the present study in that there is a general splitting of the GDR with strong deformation (see element (a) of figure 1).…”

Section: Resultsmentioning

confidence: 96%

“…A similar analysis, including the TGI-QPNM and the TGI-QRPA approaches, has been carried out for 233-239 U isotopes [65]. However, no significant differences have been found in the GDR spectra of odd-A and the even-A nuclei (see [65,69,73] ). For [239][240][241][242][243] Pu nuclei, we can explain this in greater detail by describing the underlying configurations of the PDR and GDR resonances that are observed in the spectral distributions (see appendices C and D).…”

Section: Calculation Schemementioning

confidence: 96%

“…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%

“…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%

“…This extended version of the QPNM [72] formalism considers transitions of the E1 and M1 types. The literature [65,[67][68][69] has also reported that applying QPNM allows the dipole strength distribution and the related photoabsorption cross sections of the E1 (or M1) transitions to be determined. Furthermore, the sum rules were also confirmed through the determined whole-strength distributions.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

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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