Unexpected<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>5</mml:mn><mml:mo>/</mml:mo><mml:msup><mml:mn>2</mml:mn><mml:mo>−</mml:mo></mml:msup></mml:mrow></mml:math>spin of the ground state in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow /><mml:mn>147</mml:mn></mml:msup></mml:math>Ba: No octupole deformation in ground states of odd-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>A</

Rza̧ca‐Urban, T.; Urban, W.; Smith, A. G.; Ahmad, I.; Syntfeld-Każuch, A.

doi:10.1103/physrevc.87.031305

Cited by 24 publications

(18 citation statements)

References 25 publications

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“…The excitation spectra obtained by the diagonalization of the sdf -IBFM Hamiltonian reproduce the trend of the data, even though very little variation has been allowed for most of the strength parameters for the boson-fermion interaction (Table III). In 147 Ba, however, experimentally the spin of the ground state is J π = 5/2 − [30], whereas in the present calculation it is J π = 3/2 − . This state could be among the lowest in the data on 147 Ba.…”

Section: A Evolution Of Low-energy Excitation Spectracontrasting

confidence: 71%

“…In Figs. 3 and 4 [12,13,29,30]. The excitation spectra obtained by the diagonalization of the sdf -IBFM Hamiltonian reproduce the trend of the data, even though very little variation has been allowed for most of the strength parameters for the boson-fermion interaction (Table III).…”

Section: A Evolution Of Low-energy Excitation Spectrasupporting

confidence: 53%

“…(Color online) Evolution of low-energy negativeparity levels of the odd-mass Ba isotopes as functions of the neutron number. Experimental excitation energies are taken from Refs [12,13,30]…”

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confidence: 99%

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Signatures of octupole correlations in neutron-rich odd-mass barium isotopes

2018

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Octupole deformation and the relevant spectroscopic properties of neutron-rich odd-mass barium isotopes are investigated in a theoretical framework based on nuclear density functional theory and the particle-core coupling scheme. The interacting-boson Hamiltonian that describes the octupole-deformed even-even core nucleus, as well as the single-particle energies and occupation probabilities of an unpaired nucleon, are completely determined by microscopic axially-symmetric (β2, β3)-deformation constrained self-consistent mean-field calculations for a specific choice of the energy density functional and pairing interaction. A boson-fermion interaction that involves both quadrupole and octupole degrees of freedom is introduced, and their strength parameters are determined to reproduce selected spectroscopic data for the odd-mass nuclei. The model reproduces recent experimental results both for the even-even and odd-mass Ba isotopes. In particular, for 145,147 Ba our results indicate, in agreement with recent data, that octupole deformation does not determine the structure of the lowest states in the vicinity of the ground state, and only becomes relevant at higher excitation energies.

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Section: A Evolution Of Low-energy Excitation Spectracontrasting

confidence: 71%

Section: A Evolution Of Low-energy Excitation Spectrasupporting

confidence: 53%

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Signatures of octupole correlations in neutron-rich odd-mass barium isotopes

2018

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“…At present, there is a revival of the interest to the study of such shapes. It is seen in a substantial number of theoretical [4][5][6][7][8][9][10][11][12][13][14][15][16][17] and experimental [18][19][20][21][22][23][24][25][26] studies of octupole correlations and octupole deformed nuclei in the normal deformed minimum. Moreover, the attempts to understand microscopically the fission process, cluster radioactivity and the stability of superheavy elements [2,[27][28][29][30][31][32][33][34][35][36][37] as well as renewed interest to experimental studies of fission [38][39][40] created a substantial interest in octupole deformed shapes at large deformations.…”

Section: Introductionmentioning

confidence: 99%

Octupole deformation in the ground states of even-even nuclei: A global analysis within the covariant density functional theory

2016

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A systematic investigation of octupole deformed nuclei is presented for even-even systems with Z ≤ 106 located between the two-proton and two-neutron drip lines. For this study we use five most up-to-date covariant energy density functionals of different types, with a non-linear meson coupling, with density dependent meson couplings, and with density-dependent zero-range interactions. Pairing correlations are treated within relativistic Hartree-Bogoliubov (RHB) theory based on an effective separable particle-particle interaction of finite range. This allows us to assess theoretical uncertainties within the present covariant models for the prediction of physical observables relevant for octupole deformed nuclei. In addition, a detailed comparison with the predictions of non-relativistic models is performed. A new region of octupole deformation, centered around Z ∼ 98, N ∼ 196 is predicted for the first time. In terms of its size in the (Z, N ) plane and the impact of octupole deformation on binding energies this region is similar to the best known region of octupole deformed nuclei centered at Z ∼ 90, N ∼ 136. For the later island of octupole deformed nuclei, the calculations suggest substantial increase of its size as compared with available experimental data.

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“…[5] for detailed description of the experiment and data analysis). Since our previous study of 135 Sb [6] we have improved the analysis technique [7], which has allowed for the observation of additional excited states in 135 Sb above spin I π =23/2 + reported in Ref. [6].…”

mentioning

confidence: 99%

Investigation of thei13/2neutron orbital in theSn132region: New excited levels in
Korgul¹,
Bączyk²,
Urban
³

et al. 2015
Phys. Rev. C
Self Cite

View full text Add to dashboard Cite

Unexpected5/2−spin of the ground state in147Ba: No octupole deformation in ground states of odd-A

Cited by 24 publications

References 25 publications

Signatures of octupole correlations in neutron-rich odd-mass barium isotopes

Signatures of octupole correlations in neutron-rich odd-mass barium isotopes

Octupole deformation in the ground states of even-even nuclei: A global analysis within the covariant density functional theory

Investigation of thei13/2neutron orbital in theSn132region: New excited levels in
Korgul¹,
Bączyk²,
Urban
³

et al. 2015
Phys. Rev. C
Self Cite

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Unexpected5/2−spin of the ground state in147Ba: No octupole deformation in ground states of odd-A

Cited by 24 publications

References 25 publications

Signatures of octupole correlations in neutron-rich odd-mass barium isotopes

Signatures of octupole correlations in neutron-rich odd-mass barium isotopes

Octupole deformation in the ground states of even-even nuclei: A global analysis within the covariant density functional theory

Investigation of thei13/2neutron orbital in theSn132region: New excited levels inKorgul1, Bączyk2, Urban3 et al. 2015Phys. Rev. CSelf Cite

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Investigation of thei13/2neutron orbital in theSn132region: New excited levels in
Korgul¹,
Bączyk²,
Urban
³

et al. 2015
Phys. Rev. C
Self Cite