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Title: Octupole deformation in neutron-rich actinides and superheavy nuclei and the role of nodal structure of single-particle wavefunctions in extremely deformed structures of light nuclei

Abstract

Octupole deformed shapes in neutron-rich actinides and superheavy nuclei as well as extremely deformed shapes of the N ~ Z light nuclei have been investigated within the framework of covariant density functional theory. In th is study, we confirmed the presence of new region of octupole deformation in neutron-rich actinides with the center around Z ~ 96, N ~ 196 but our calculations do not predict octupole deformation in the ground states of superheavy Z > 108 nuclei. Lastly, as exemplified by the study of 36Ar, the nodal structure of the wavefunction of occupied single-particle orbitals in extremely deformed structures allows to understand the formation of the α-clusters in very light nuclei, the suppression of the α-clusterization with the increase of mass number, the formation of ellipsoidal mean-field type structures and nuclear molecules.

Authors:
 [1];  [2];  [1]
  1. Mississippi State Univ., Mississippi State, MS (United States). Department of Physics and Astronomy
  2. Birzeit University (Palestine). Physics Department
Publication Date:
Research Org.:
Mississippi State Univ., Mississippi State, MS (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1459444
Grant/Contract Number:  
SC0013037
Resource Type:
Accepted Manuscript
Journal Name:
Physica Scripta
Additional Journal Information:
Journal Volume: 93; Journal Issue: 3; Journal ID: ISSN 0031-8949
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; density functional theory; octupole deformation; extremely deformed shapes; wavefunction

Citation Formats

Afanasjev, A. V., Abusara, H., and Agbemava, S. E. Octupole deformation in neutron-rich actinides and superheavy nuclei and the role of nodal structure of single-particle wavefunctions in extremely deformed structures of light nuclei. United States: N. p., 2018. Web. doi:10.1088/1402-4896/aaa3d0.
Afanasjev, A. V., Abusara, H., & Agbemava, S. E. Octupole deformation in neutron-rich actinides and superheavy nuclei and the role of nodal structure of single-particle wavefunctions in extremely deformed structures of light nuclei. United States. doi:10.1088/1402-4896/aaa3d0.
Afanasjev, A. V., Abusara, H., and Agbemava, S. E. Tue . "Octupole deformation in neutron-rich actinides and superheavy nuclei and the role of nodal structure of single-particle wavefunctions in extremely deformed structures of light nuclei". United States. doi:10.1088/1402-4896/aaa3d0. https://www.osti.gov/servlets/purl/1459444.
@article{osti_1459444,
title = {Octupole deformation in neutron-rich actinides and superheavy nuclei and the role of nodal structure of single-particle wavefunctions in extremely deformed structures of light nuclei},
author = {Afanasjev, A. V. and Abusara, H. and Agbemava, S. E.},
abstractNote = {Octupole deformed shapes in neutron-rich actinides and superheavy nuclei as well as extremely deformed shapes of the N ~ Z light nuclei have been investigated within the framework of covariant density functional theory. In th is study, we confirmed the presence of new region of octupole deformation in neutron-rich actinides with the center around Z ~ 96, N ~ 196 but our calculations do not predict octupole deformation in the ground states of superheavy Z > 108 nuclei. Lastly, as exemplified by the study of 36Ar, the nodal structure of the wavefunction of occupied single-particle orbitals in extremely deformed structures allows to understand the formation of the α-clusters in very light nuclei, the suppression of the α-clusterization with the increase of mass number, the formation of ellipsoidal mean-field type structures and nuclear molecules.},
doi = {10.1088/1402-4896/aaa3d0},
journal = {Physica Scripta},
number = 3,
volume = 93,
place = {United States},
year = {2018},
month = {2}
}

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Free Publicly Available Full Text
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Cited by: 2 works
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Figures / Tables:

Figure 1 Figure 1: Octupole deformed nuclei in the part of nuclear chart under study for indicated covariant energy density functionals. Only nuclei with non-vanishing ∆Eoct are shown by squares; the colors of the squares represent the values of |∆Eoct| (in MeV) (see colormap). The two-proton and two-neutron drip lines are displayedmore » by solid black lines. From Ref. [13].« less

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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.