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<p class="TitleMain"><strong>Towards a consistent understanding of the exotic nucleus <sup>42</sup><sub>14</sub>Si<sub>28</sub></strong></p>

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Title Statement <p class="TitleMain"><strong>Towards a consistent understanding of the exotic nucleus <sup>42</sup><sub>14</sub>Si<sub>28</sub></strong></p>
 
Added Entry - Uncontrolled Name Afsar Abbas, Syed ; Centre for Theoretical Physics, J M I University, New Delhi 110 025, India
Ain Usmani, Anisul
Rahaman, Usuf
Ikram, M
 
Uncontrolled Index Term Exotic nuclei, New magicity, Halo nucleus, Tennis-ball nucleus, Bubble nucleus, Deformation, Sphericity, Triton, QCD, Quark model
 
Summary, etc. <p class="Abstract">The issue of magicity of  has been a contentious one. Fridmann <em>et al</em>., through studies of two-proton knockout reaction , presented strong evidence in support of magicity and sphericity of . However in complete conflict with this, Bastin <em>et al</em>., gave equally strong empirical evidence, to show that the N = 28 magicity had completely collapsed in  to make it well deformed. The consensus at present though is in favour of the validity of the latter experiment. However, our QCD based theoretical model supports the result of Fridmann experiment. They had explored the amazing persistence of the unique exotic nucleus as a stable structure within the nucleus; even after stripping off six-protons through the isotonic chain:. Thus it is the novel and unexpected stability of proton shell closure at Z=14 in, which is playing such a dominant role in ensuring its magicity, while the neutron magic number N = 28, goes into hiding or actually disappears. Recently, SAA has shown that the fusion experiment of a beam of halo nucleus <sup>6</sup>He with the target nucleus <sup>238</sup>U , actually provided strong evidence that the “core” of the halo nucleus has the structure of a tennis-ball (bubble) like nucleus, with a “hole” at the centre of its density distribution. This provides us with clear-cut support for our Quantum Chromodynamics based model of clusters of tritons in neutron-rich nuclei. Here we show that our QCD based model, provides support to Fridmann <em>et al</em>. , showing that,  has a spherically magic structure of 14  (14-tritons) with a tennis-ball (bubble) like structure with “hidden” N=28 neutrons.</p>
 
Publication, Distribution, Etc. Indian Journal of Pure & Applied Physics (IJPAP)
2022-10-20 10:39:34
 
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http://op.niscair.res.in/index.php/IJPAP/article/view/67699
 
Data Source Entry Indian Journal of Pure & Applied Physics (IJPAP); ##issue.vol## 58, ##issue.no## 5 (2020): Indian Journal of Pure & Applied Physics
 
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