The r-process constitutes one of the major challenges in nuclear astrophysics. Its astrophysical site has not yet been identified but there is observational evidence suggesting that at least two possible sites should contribute to the solar system abundance of r-process elements and that the r-process responsible for the production of elements heavier than Z = 56 operates quite robustly produci...

A practical computing algorithm has been developed for calculating the macroscopic energy of nuclei. Four different models of the macroscopic energy are examined and their influence on the results is discussed. The results of the calculations are presented in the form of curves to illustrate how the different macroscopic models influence on the spontaneous fission energy barriers of super-heavy...