Shrunk halo and quenched shell gap at N = 16 in 22C: Inversion of sd states and deformation effects
We explore the interplays among the formation of a halo, deformation effects, the inversion of sd states, the shell evolution, and changes of nuclear magicities in 22C by using a deformed relativistic Hartree–Bogoliubov model in continuum. It is revealed that there is an inversion between the two sp...
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doaj-a9b12f462fda4604ba372a187d5bdc182020-11-24T21:42:45ZengElsevierPhysics Letters B0370-26932018-10-01785530535Shrunk halo and quenched shell gap at N = 16 in 22C: Inversion of sd states and deformation effectsXiang-Xiang Sun0Jie Zhao1Shan-Gui Zhou2CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, ChinaMicrosystem and Terahertz Research Center, China Academy of Engineering Physics, Chengdu 610200, Sichuan, ChinaCAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou, 730000, China; Synergetic Innovation Center for Quantum Effects and Application, Hunan Normal University, Changsha, 410081, China; Corresponding author at: CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China.We explore the interplays among the formation of a halo, deformation effects, the inversion of sd states, the shell evolution, and changes of nuclear magicities in 22C by using a deformed relativistic Hartree–Bogoliubov model in continuum. It is revealed that there is an inversion between the two spherical orbitals 2s1/2 and 1d5/2 in 22C compared with the conventional single particle shell structure in stable nuclei. This inversion, together with deformation effects, results in a shrunk halo and a quenched shell gap at N=16. It is predicted that the core of 22C is oblate but the halo is prolate. Therefore several exotic nuclear phenomena, including the halo, the shape decoupling effects, the inversion of sd states, and the evolution of shell structure which results in (dis)appearance of magic numbers, coexist in one single nucleus C22. Keywords: 22C, Shrunk halo, (2s1/2,1d5/2) inversion, Shape decoupling, Deformed RHB model in continuumhttp://www.sciencedirect.com/science/article/pii/S0370269318306907 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xiang-Xiang Sun Jie Zhao Shan-Gui Zhou |
spellingShingle |
Xiang-Xiang Sun Jie Zhao Shan-Gui Zhou Shrunk halo and quenched shell gap at N = 16 in 22C: Inversion of sd states and deformation effects Physics Letters B |
author_facet |
Xiang-Xiang Sun Jie Zhao Shan-Gui Zhou |
author_sort |
Xiang-Xiang Sun |
title |
Shrunk halo and quenched shell gap at N = 16 in 22C: Inversion of sd states and deformation effects |
title_short |
Shrunk halo and quenched shell gap at N = 16 in 22C: Inversion of sd states and deformation effects |
title_full |
Shrunk halo and quenched shell gap at N = 16 in 22C: Inversion of sd states and deformation effects |
title_fullStr |
Shrunk halo and quenched shell gap at N = 16 in 22C: Inversion of sd states and deformation effects |
title_full_unstemmed |
Shrunk halo and quenched shell gap at N = 16 in 22C: Inversion of sd states and deformation effects |
title_sort |
shrunk halo and quenched shell gap at n = 16 in 22c: inversion of sd states and deformation effects |
publisher |
Elsevier |
series |
Physics Letters B |
issn |
0370-2693 |
publishDate |
2018-10-01 |
description |
We explore the interplays among the formation of a halo, deformation effects, the inversion of sd states, the shell evolution, and changes of nuclear magicities in 22C by using a deformed relativistic Hartree–Bogoliubov model in continuum. It is revealed that there is an inversion between the two spherical orbitals 2s1/2 and 1d5/2 in 22C compared with the conventional single particle shell structure in stable nuclei. This inversion, together with deformation effects, results in a shrunk halo and a quenched shell gap at N=16. It is predicted that the core of 22C is oblate but the halo is prolate. Therefore several exotic nuclear phenomena, including the halo, the shape decoupling effects, the inversion of sd states, and the evolution of shell structure which results in (dis)appearance of magic numbers, coexist in one single nucleus C22. Keywords: 22C, Shrunk halo, (2s1/2,1d5/2) inversion, Shape decoupling, Deformed RHB model in continuum |
url |
http://www.sciencedirect.com/science/article/pii/S0370269318306907 |
work_keys_str_mv |
AT xiangxiangsun shrunkhaloandquenchedshellgapatn16in22cinversionofsdstatesanddeformationeffects AT jiezhao shrunkhaloandquenchedshellgapatn16in22cinversionofsdstatesanddeformationeffects AT shanguizhou shrunkhaloandquenchedshellgapatn16in22cinversionofsdstatesanddeformationeffects |
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