A Systematic Study on the Existence of 7-9B, 16-19Ne, 8-11C, 23-30P and 26-32S Nuclei via Cluster Decay in the Super Heavy Region

 

• K. P. Anjali
  Department of Physics, Government Brennen College, Thalassery, Kerala, India.
• K. Prathapan
  Department of Physics, Government Brennen College, Thalassery, Kerala, India
• R. K. Biju
  Department of Physics, Government Brennen College, Thalassery, Kerala, India.; Department of Physics, Pazhassi Raja N S S College, Mattanur, India
• K. P. Santhosh
  School of Pure and Applied Physics, Kannur University, Payyanur Campus, Payyanur, India.

DOI: https://doi.org/10.15415/jnp.2019.71001

Keywords: Halo Nuclei, Cluster Radioactivity, Deformation

Abstract

Based on the Coulomb and Proximity Potential Model, we have studied the decay probabilities of various exotic nuclei from even-even nuclei in the super heavy region. The half-lives and barrier penetrability for the decay of exotic nuclei such as ^7-9B, ^16-19 Ne, ^8-11 C, ^23-30 P and ^26-32 S from the isotopes ^274-332116,^274-334 118 and ^288-334120 are determined by considering them as spherical as well as deformed nuclei. The effect of ground state quadrupole (β₂), Octupole (β₃) and hexadecapole (β₄) deformation of parent, daughter and cluster nuclei on half- lives and barrier penetrability were studied. Calculations have done for the spherical nuclei and deformed nuclei in order to present the effects of the deformations on half-lives. It is found that height and shape of the barrier reduces by the inclusion of deformation and hence half-life for the emission of different clusters decreases and barrier penetrability increases. Changes in the half-lives with and without the inclusion of deformation effects are compared in the graph of half -life and barrier penetrability against neutron number of parents. It is evident from the computed half lives that many of the exotic nuclei emissions are probable. Moreover shell structure effects on the half-lives of decay are evident from these plots. Peak in the plot of halflife and dip in the plot of barrier penetrability against neutron number of parent show shell closure at or near to N=184, N=200 and N=212.

 

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Issue

Vol 7 No 1 (2019) 

 

How to Cite

K. P. Anjali; K. Prathapan; R. K. Biju; K. P. Santhosh. A Systematic Study on the Existence of 7-9B, 16-19Ne, 8-11C, 23-30P and 26-32S Nuclei via Cluster Decay in the Super Heavy Region. J. Nucl. Phy. Mat. Sci. Rad. A. 2019, 7, 1-12.

 

 

 

The Three-Body Structure of 2n and 2p Halo Nuclei I. Sreeja and M. Balasubramaniam

A three-cluster model developed for ternary fission studies has been applied for the first time to study the three-body structure of 2n and 2p halo nuclei. For the experimentally known 2n, 2p halo nuclei, all possible ternary fragmentation potential energy surface (PES) is calculated. The two-body breakup reported earlier, clearly indicated a strong minimum in the PES corresponding to 1n/1p and/or 2n/2p cluster plus core configuration. However, the present calculations of PES reveal that, the three- body breakup does not result always with 2n and/or 2p as a cluster. A 1n and/or 1p cluster along with the core is initially formed, and then the core loses one nucleon to make either a 2n plus core or 2p plus core structure. The results are substantiated with the calculations of preformation probability calculated within quantum mechanical fragmentation theory.

URL	http://dspace.chitkara.edu.in/jspui/bitstream/123456789/707/1/002JNP_Sreeja.pdf
ISSN	Print : 2321-8649, Online : 2321-9289
DOI	https://doi.org/10.15415/jnp.2018.52024
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