Melting of N = 20 shell and development of N = 16 and 32 shells for neutronrich nuclei have been studied extensively by including tensor interaction in Skyrme-Hartree-Fock theory optimized to reproduce the splitting Δ1f shells of 40,48Ca and 56Ni nuclei. Evolution of gap generated by the energy difference of single-particle levels ν2s1/2 and ν1d3/2 has been found to be responsible for shell closure at N = 16. The splitting pattern of spin-orbit partners 2p shell model state in Ca, Ti, Cr, Fe and Ni isotopes indicates the formation of a new shell at N = 32 region. © Indian Academy of Sciences.

R BHATTACHARYA

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University of Calcutta (informally known as Calcutta University or CU) is a collegiate public state university located in Kolkata, West Bengal, India.&nbsp;Within India it is recognized as a &quot;Five-Star University&quot; and accredited &quot;A&quot; Grade by National Assessment and Accreditation Council.

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The University of Calcutta has secured the Fifth position among the Universities of India in the prestigious &quot;Indian University Ranking 2019&quot; list, released by the NIRF of the Ministry of Human Resource Development, Government of India.

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It was established on 24 January 1857, and was one of the first institutions in Asia to be established as a multidisciplinary and Western-style university. Its alumni and faculty include several heads of state, heads of government, social reformers, prominent artists, only academy award winner and Dirac medal winner in India, many Fellows of the Royal Society and five Nobel laureates as of 2019 which is highest in South Asia.

University Of Calcutta

Pramana - Journal of Physics

Using Skyrme's density dependent interaction the evolution of nuclear shells has been studied by Hartree-Fock theory. Optimization of the effect of tensor interaction has been done by reproducing the observed splitting of shell model states of 40,48 Ca, 56 Ni and 208 Pb. Splitting of spin-orbit partners in Ca isotopes, 56 Ni,90 Zr, N=82 isotones, Sn isotopes have been studied and evolution of gaps in Z,N=8,20,28 have been reanalyzed with the inclusion of tensor interaction. Magic gaps for shell closed nuclei have been evaluated. For doubly shell closed nuclei it has been observed that tensor interaction is sensitive to spin saturation of nuclear shells. Spin-orbit splitting of single particle states evaluated through tensor interaction act as pointers of shell structures. © 2013 Elsevier B.V.

Nuclear Physics A

Tensor interaction and its influence on evolution of nuclear shells

Modern Physics Letters B

MAGNETO-STRUCTURAL TRANSITIONS: MOLECULAR DYNAMICS SIMULATIONS OF A UNITED-ATOM, MESOSCOPIC MODEL

Physical Review Letters

N=16Spherical Shell Closure inO24

Three-Body Forces and the Limit of Oxygen Isotopes

Physical Review C

Spin-orbit and tensor mean-field effects on spin-orbit splitting including self-consistent core polarizations

Emergence of new magic numbers, N = 16 and 32 by tensor interaction in Skyrme-Hartree-Fock theory

Journal	Pramana - Journal of Physics
Publisher	Indian Academy of Sciences
ISSN	0304-4289
Open Access	Yes