Abstract
The macroscopic–microscopic method is extended to calculate the deformation energy and penetrability for binary nuclear configurations typical for fission processes. The deformed two-centre shell model is used to obtain single-particle energy levels for the transition region of two partially overlapped daughter and emitted fragment nuclei. The macroscopic part is obtained using the Yukawa-plus-exponential potential. The microscopic shell and pairing corrections are obtained using the Strutinsky and BCS approaches and the cranking formulae yield the inertia tensor. Finally, the WKB method is used to calculate penetrabilities and spontaneous fission half-lives. Calculations are performed for the decay of 282,292120 nuclei.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
J Maruhn and W Greiner, Z. Phys. 251, 431 (1972)
R A Gherghescu, Phys. Rev. C 67, 014309 (2003)
V M Strutinsky, Nucl. Phys. A 95, 420 (1967)
K T Davies and A J Sierk, J. Comp. Phys. 18, 311 (1975)
H J Krappe, J R Nix and A J Sierk, Phys. Rev. C 20, 992 (1979)
D N Poenaru (Ed.) Nuclear decay modes (Institute of Physics Publishing, Bristol, 1996)
J Bardeen, L Cooper and J Scrieffer, Phys. Rev. C 108, 1175 (1957)
M Brack et al, Rev. Mod. Phys. 44, 320 (1972)
Acknowledgements
This work is partially supported within the IDEI Programme under contracts 42 /05.10. 2011 and 43 /05.10.2011 with UEFISCDI and NUCLEU Programmes, Bucharest.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
GHERGHESCU, R.A., POENARU, D.N. Spontaneous fission of superheavy nuclei. Pramana - J Phys 85, 439–446 (2015). https://doi.org/10.1007/s12043-015-1059-8
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12043-015-1059-8