Systematic study of the thermal pairing re-entrance in the 72Ti nucleus

Yıl 2019, NSP2018 Özel Sayı, 142 - 148, 28.03.2019

Belabbas Mohamed Jérôme Margueron

Öz

Finite-temperature
Hartree-Fock-Bogoliubov calculations are performed in ⁷²Ti using
Skyrme interactions, to predict the finite-temperature pairing re-entrance
phenomenon for the system of neutrons. It is also shown that pairing re-entrance
modifies the neutron single-particle energies around the Fermi level, as well
as occupation numbers and quasiparticle levels. It is also shown that neutron
resonant states are expected to contribute substantially to pairing
correlations and the two predicted critical temperatures are T_c1=0.1-0.2
MeVand T_c2=0.7-0.9 MeV. On the
other hand, Our results for the ground-state energies, proton and neutron
separation energies are in very good agreement with experiment where available.

Anahtar Kelimeler

Nuclear density functional theory, pairing correlation, nuclear forces nuclear density functional theory

Kaynakça

• [1] J. Margueron and E. Khan., Phys. Rev. C 86, 065801(2012).
• [2] M. Belabbas, J.J.Li and J. Margueron Phys. Rev. C 96,024304(2017).
• [3] J.J.Li, J.Margueron, W.H.Long, N.Van Giai, Phys. Rev. C 92,014302 (2015).
• [4] J.J.Li, J.Margueron, W.H.Long, N.Van Giai, Phys. Lett. B 753,97 (2016).
• [5] J.J.Li, J.Margueron, W.H.Long, N.Van Giai, Phys. Lett. B 732,169 (2014).
• [6] A. T. Kruppa, P. H. Heenen and R. J. Liotta, Phys. Rev. C63044324 (2001).
• [7] N. Sandulescu, O.Civitarese and R. J. Liotta, Phys. Rev. C61044317 (2000).
• [8] P. G. De Gennes, Supercoductivity of Metals and Allows(Addition-Wesley, London, 1986).
• [9] J. Dobaczewski, H. Flocard, and J. Treiner, Nucl. Phys. A422,103 (1984).
• [10] G. F. Bertsch and H. Esbensen, Ann. Phys. (N.Y.) 209 327(1991).
• [11] W. Satula , J. Dobaczewski, and W. Nazarewicz, Phys. Rev. Lett.84, 3599(1998).
• [12] M. Wang, G. Audi, A.H. Wapstra, F.G. Kondev, M. Mac-Cormick, X. Xu, B. Pfeiffer, Chin. Phys. C 36, 160 (2012).
• [13] O. Civitarese, G. G. Dussel and R. Perazzo, Nuc. Phys. A 404, 251 (1983).
• [14] A. L. Goodman, Nucl. Phys. A 352, 30 (1981); A. L. Goodman, Phys. Rev. C 34, 1942 (1986).
• [15] N. Sandulescu, Nguyen Van Giai and R. J. Liotta, Phys. Rev. C 61 061301(R), (2000).
• [16] A. Sedrakian, T. Alm, and U. Lombardo, Phys. Rev. C 55, R582 (1997).
• [17] A. T. Kruppa, P. H. Heenen and R. J. Liotta, Phys. Rev. C63 044324 (2001).
• [18] A. Pastore, J. Margueron, P. Schuck, & X. Vias, Phys. Rev. C 88, 034314 (2013).
• [19] K. Bennaceur, J. Dobaczewski and M. Ploszajjczak, Phys. Rev. C 60, 2809 (1999).