Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2011-01-02
Physics
Nuclear Physics
Nuclear Theory
16 Pages, 4 figures, 1 Table
Scientific paper
Seeger's semi-empirical mass formula is revisited for two of its constants (bulk constant {\alpha}(0) and neutron-proton asymmetry constant a_{a}) readjusted to obtain the ground-state (g.s.) binding energies of nuclei within a precision of <1.5 MeV and for nuclei up to Z=118. The aim is to include the temperature T-dependence on experimental binding energies, and not to obtain the new parameter set of Seeger's liquid drop energy VLDM . Our proceedure is to define the g.s. binding energy B = V_{LDM} + {\delta}U, as per Strutinsky renormalization procedure, and using the empirical shell corrections {\delta}U of Myers and Swiatecki, fit the constants of V_{LDM} to obtain the experimental binding energy Bexpt or theoretically calculated Btheo if data were not available. The T-dependence of the constants of V_{LDM}, is introduced as per the work of Davidson et al., where the pairing energy {\delta}(T) is modified as per new calculations on compound nucleus decays. The newly fitted constants of V_{LDM} at T=0 are made available here for use of other workers interested in nuclear dynamics of hot and rotating nuclei.
Bansal Manie
Gupta Raj K.
Kumar Raj
Sharma Manoj K.
Singh BirBikram
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