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Temperature induced shell effects in deformed nuclei

B. K. Agrawal·Tapas Sil·S. K. Samaddar·J. N. De
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Abstract

The thermal evolution of the shell correction energy is investigated for deformed nuclei using Strutinsky prescription in a self-consistent relativistic mean-field framework. For temperature independent single-particle states corresponding to either spherical or deformed nuclear shapes, the shell correction energy $Δ_{sc}$ steadily washes out with temperature. However, for states pertaining to the self-consistent thermally evolving shapes of deformed nuclei, the dual role played by the single-particle occupancies in diluting the fluctuation effects from the single-particle spectra and in driving the system towards a smaller deformation is crucial in determining $Δ_{sc}$ at moderate temperatures. In rare earth nuclei, it is found that $Δ_{sc}$ builds up strongly around the shape transition temperature; for lighter deformed nuclei like $^{64}Zn$ and $^{66}Zn$, this is relatively less prominent.

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B. K. Agrawal, Tapas Sil, S. K. Samaddar, J. N. De. 2001-04-25. Temperature induced shell effects in deformed nuclei. https://doi.org/10.1103/physrevc.64.017304

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