Structure of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>A</mml:mi><mml:mo>=</mml:mo><mml:mn>82</mml:mn></mml:mrow></mml:math>analogs and isospin-symmetry-breaking effects on superallowed Fermi<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>β</mml:mi></mml:mrow></mml:math>decay

Petrovici, A.; Schmid, K.W.; Radu, O.; Faessler, Amand

doi:10.1103/physrevc.78.064311

Cited by 14 publications

(4 citation statements)

References 21 publications

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“…The comprehensive description of the structure and dynamics of these exotic nuclei is a challenge for the beyond-mean-field models aiming to treat realistically the interplay of shape coexistence and mixing, the isospin-symmetry-breaking interactions, the competing likenucleon and the neutron-proton pairing correlations responsible for drastic changes of their properties with number of nucleons, spin, and excitation energy. Various coexistence phenomena revealed by the structure and dynamics of A∼70 proton-rich nuclei have been extensively explored in the last years within the complex Excited Vampir variational model [1][2][3][4][5][6]. We obtained good agreement with the available data and part of the predictions have been recently experimentally confirmed.…”

Section: Introductionsupporting

confidence: 58%

“…In recent experiments on A=70 and A=74 triplets analog states up to spin 4 + in the Z=N+2 70 Kr and 74 Sr nuclei [11,12] have been tentatively assigned, while the properties of the other members of the corresponding isovector triplets, 70 Br, 70 Se, 74 Rb, and 74 Kr have been extensively studied [13][14][15][16][17][18][19][20][21][22]. Different theoretical models and various effective interactions have been used to study effects of isospin-nonconserving forces on the structure and dynamics of medium mass nuclei [1,[3][4][5][6][23][24][25].…”

Section: Isospin-related Phenomena and Shape Coexistencementioning

confidence: 99%

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Exotic phenomena in medium mass N ≃ Z nuclei within the beyond-mean-field approach

2018

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Recent studies on properties of proton-rich nuclei in the A=70 mass region brought insights into fundamental symmetries and interactions and produced characteristics required by the astrophysical scenarios on the rp-process path revealing coexistence phenomena which dominate the structure and dynamics of these exotic nuclei. Isospin mixing and related phenomena like Coulomb energy differences, mirror energy differences, triplet energy differences as well as superallowed Fermi beta decay in isovector triplets have been investigated. The interplay between isospin-symmetry-breaking and shape-coexistence effects on isospin-related phenomena in N Z  nuclei as well as weak interaction processes under terrestrial and stellar x-ray burst environment have been explored in the frame of the beyond-mean-field complex Excited Vampir variational model. We used an adequate model space and the effective interaction was derived from a G-matrix starting from the charge-dependent Bonn CD potential. Results concerning the influence of shape coexistence and mixing on the structure and β-decay properties of exotic nuclei will be reviewed.

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Section: Introductionsupporting

confidence: 58%

Section: Isospin-related Phenomena and Shape Coexistencementioning

confidence: 99%

Exotic phenomena in medium mass N ≃ Z nuclei within the beyond-mean-field approach

2018

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“…The superallowed Fermi β decay provides fundamental tests of the properties of the electroweak interaction. The effect of the isospin symmetry breaking on the superallowed Fermi β decay between 0 + T = 1 states requires the evaluation of ∼1% theoretical corrections in the A 70 mass region [1,8,9] that arise due to the change in the structure of the parent and daughter analog states.…”

Section: Isospin-symmetry-breaking Effectsmentioning

confidence: 99%

“…For 70 Se the excited Vampir predicts that the oblate components dominate up to spin 4 + , and the oblate (prolate) components represent 57 (43)%, 59 (41)%, 64 (36)%, 39 (61)% and 5 (95)% for the corresponding analog states [11]. For the A = 82 and A = 86 nuclei it was found that one prolate component strongly dominates the structure of the yrast states representing more than 90% of the total amplitude [9].…”

Section: Isospin-symmetry-breaking Effectsmentioning

confidence: 99%

Self-consistent description of coexistence phenomena in medium mass nuclei

Petrovici¹

2010

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

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Shape coexistence and mixing, isospin mixing, competition between neutron–proton and like-nucleon pairing correlations have been identified as the main characteristic features of nuclei near the N = Z line in the A ≃ 70 mass region. The self-consistent treatment of exotic phenomena dominated by their interplay represents a challenge for nuclear many-body models. Currently, the realistic description of tiny effects in this mass region aiming to test the fundamental interactions and symmetries, and the required theoretical predictions concerning the nuclear properties relevant for astrophysical scenarios, are still open problems.

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Nuclear Data Sheets for A=82

Tuli

Browne

2019

Nuclear Data Sheets

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Structure ofA=82analogs and isospin-symmetry-breaking effects on superallowed Fermiβdecay

Cited by 14 publications

References 21 publications

Exotic phenomena in medium mass N ≃ Z nuclei within the beyond-mean-field approach

Exotic phenomena in medium mass N ≃ Z nuclei within the beyond-mean-field approach

Self-consistent description of coexistence phenomena in medium mass nuclei

Nuclear Data Sheets for A=82

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