Comparative study of the alpha decay of Hg isotopes using different forms of nuclear potentials

K.P. Santhosh; Indu Sukumaran

doi:10.1016/j.crhy.2018.08.003

Comparative study of the alpha decay of Hg isotopes using different forms of nuclear potentials
[La désintégration alpha des isotopes du mercure, à travers différents modèles de potentiel nucléaire]

K.P. Santhosh ¹ ; Indu Sukumaran ¹

¹ School of Pure and Applied Physics, Kannur University, Swami Anandatheertha Campus, Payyanur 670327, Kerala, India

Comptes Rendus. Physique, Prizes of the French Academy of Sciences 2017 / Prix 2017 de l'Académie des Sciences, Volume 19 (2018) no. 5, pp. 347-355.

Résumé
Abstract

La période radioactive alpha des isotopes du mercure de nombre de masse A compris entre 171 et 212 a été évaluée à partir de 25 modèles différents de potentiel nucléaire adapté à la radioactivité alpha. Le calcul des écarts types suggère que le potentiel pertinent est BW 91, avec un écart de 0,133. La deuxième place revient à Proximity 1966, suivi de Proximity 1984 et de Proximity 2003-I, II, avec des écarts types inférieurs à 0,2. Les autres potentiels ont presque tous un écart type inférieur à 1. La courbe universelle caractéristique du rayonnement alpha est une droite, quel que soit le potentiel utilisé. Comme les périodes calculées sont en bon accord avec les valeurs expérimentales, on a calculé aussi, par la même méthode, les périodes de quelques émetteurs alpha nouveaux.

The alpha decay half-lives of Hg isotopes within the range $A = 171 – 212$ have been studied using 25 different versions of nuclear potentials to select the suitable form of nuclear potential for alpha decay studies. The computed standard deviations suggested that the apt potential is BW 91 with a deviation 0.133. The next low deviation is shown by Proximity 1966, Proximity 1984, and Proximity 2003-I, II with deviations less than 0.2. Concerning other potentials, the fact we observed is that almost all the potentials possess a standard deviation less than one. The universal curve studied for alpha decay is observed to show straight line behavior irrespective of the nuclear potential used. Since the predicted alpha half-lives match well the experimental values, the half-lives of certain new Hg alpha emitters have been predicted by the present method.

Publié le : 2018-07-01

DOI : 10.1016/j.crhy.2018.08.003

Keywords: Heavy particle decay, Alpha decay, Proximity potential, Half-life
Mots-clés : Décroissance des particules lourdes, Décroissance alpha, Potentiel de proximité, Demi-vie

Affiliations des auteurs :

K.P. Santhosh ¹ ; Indu Sukumaran ¹

¹ School of Pure and Applied Physics, Kannur University, Swami Anandatheertha Campus, Payyanur 670327, Kerala, India

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     author = {K.P. Santhosh and Indu Sukumaran},
     title = {Comparative study of the alpha decay of {Hg} isotopes using different forms of nuclear potentials},
     journal = {Comptes Rendus. Physique},
     pages = {347--355},
     publisher = {Elsevier},
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     number = {5},
     year = {2018},
     doi = {10.1016/j.crhy.2018.08.003},
     language = {en},
}

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K.P. Santhosh; Indu Sukumaran. Comparative study of the alpha decay of Hg isotopes using different forms of nuclear potentials. Comptes Rendus. Physique, Prizes of the French Academy of Sciences 2017 / Prix 2017 de l'Académie des Sciences, Volume 19 (2018) no. 5, pp. 347-355. doi : 10.1016/j.crhy.2018.08.003. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2018.08.003/

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