Bubble structure in superheavy nuclei around neutron and proton shell closure
(2021) In International Journal of Modern Physics E 30(12).- Abstract
We have performed a systematic study for the nuclear structure of superheavy nuclei with a special emphasis on the nuclei with possible central depletion of proton and neutron density in the mass region A â 300 using the Relativistic Hartree-Bogoliubov (RHB) framework. It has been observed that in the case of neutron density distribution, the occurrence of central depletion is related to the occupancy of 4s orbital and it is found to decrease with increasing occupancy of the 4s orbital. On the other hand, in the case of proton density distribution, the central density depletion is mainly due to the lowering of weakly bound p-orbital states close to the continuum as it is energetically favored to lower the Coulomb repulsion in the case... (More)
We have performed a systematic study for the nuclear structure of superheavy nuclei with a special emphasis on the nuclei with possible central depletion of proton and neutron density in the mass region A â 300 using the Relativistic Hartree-Bogoliubov (RHB) framework. It has been observed that in the case of neutron density distribution, the occurrence of central depletion is related to the occupancy of 4s orbital and it is found to decrease with increasing occupancy of the 4s orbital. On the other hand, in the case of proton density distribution, the central density depletion is mainly due to the lowering of weakly bound p-orbital states close to the continuum as it is energetically favored to lower the Coulomb repulsion in the case of superheavy nuclei. Also, occupation probability of the lower angular momentum states (p-orbitals) lying near the Fermi level is strongly suppressed due to the weak centrifugal barrier and strong Coulomb repulsion in comparison to large angular momentum states (contributing to surface region mainly), resulting in central density depletion. Among the considered cases in the present work, the maximum depletion is observed for 292120 and for 294Og under spherically symmetric and axially deformed cases, respectively.
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- author
- Yadav, Akhilesh ; Shukla, A. and Åberg, Sven LU
- organization
- publishing date
- 2021-12-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Central density depletion, Mean field theory, Nuclear structure, Shell closure, Superheavy element
- in
- International Journal of Modern Physics E
- volume
- 30
- issue
- 12
- article number
- 2150099
- publisher
- World Scientific Publishing
- external identifiers
-
- scopus:85121655012
- ISSN
- 0218-3013
- DOI
- 10.1142/S0218301321500993
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2021 World Scientific Publishing Company.
- id
- a8439943-779c-4d50-a329-7a15068f0554
- date added to LUP
- 2022-01-30 13:24:56
- date last changed
- 2022-04-27 07:28:23
@article{a8439943-779c-4d50-a329-7a15068f0554,
abstract = {{<p>We have performed a systematic study for the nuclear structure of superheavy nuclei with a special emphasis on the nuclei with possible central depletion of proton and neutron density in the mass region A â 300 using the Relativistic Hartree-Bogoliubov (RHB) framework. It has been observed that in the case of neutron density distribution, the occurrence of central depletion is related to the occupancy of 4s orbital and it is found to decrease with increasing occupancy of the 4s orbital. On the other hand, in the case of proton density distribution, the central density depletion is mainly due to the lowering of weakly bound p-orbital states close to the continuum as it is energetically favored to lower the Coulomb repulsion in the case of superheavy nuclei. Also, occupation probability of the lower angular momentum states (p-orbitals) lying near the Fermi level is strongly suppressed due to the weak centrifugal barrier and strong Coulomb repulsion in comparison to large angular momentum states (contributing to surface region mainly), resulting in central density depletion. Among the considered cases in the present work, the maximum depletion is observed for 292120 and for 294Og under spherically symmetric and axially deformed cases, respectively.</p>}},
author = {{Yadav, Akhilesh and Shukla, A. and Åberg, Sven}},
issn = {{0218-3013}},
keywords = {{Central density depletion; Mean field theory; Nuclear structure; Shell closure; Superheavy element}},
language = {{eng}},
month = {{12}},
number = {{12}},
publisher = {{World Scientific Publishing}},
series = {{International Journal of Modern Physics E}},
title = {{Bubble structure in superheavy nuclei around neutron and proton shell closure}},
url = {{http://dx.doi.org/10.1142/S0218301321500993}},
doi = {{10.1142/S0218301321500993}},
volume = {{30}},
year = {{2021}},
}