Władysław Świątecki

Research Świątecki was a pioneer in several areas of nuclear physics, including studies of nuclear fission of superheavy elements, the nuclear shell model, and the development of a semi-empirical mass formula. In 1966, Świątecki, along with William Myers and Heiner Meldner, developed a model that revealed an increase in fission barrier height for nuclei centered around atomic number 114, suggesting the possibility of stabilizing shell effects in that region. Although several other such regions were proposed, including one around element 126 as early as 1957, Świątecki and Myers determined that the Coulomb force would shift the proton shell closure to Z = 114. With this work, the theory of an "island of stability" for superheavy nuclides gained popularity, and motivated experiments seeking such nuclides in subsequent decades.

In addition to his prediction of the island of stability, Świątecki's contributions led to further developments in the nuclear shell model, most notably the macroscopic-microscopic method for calculating various properties of nuclei and extrapolating to unknown nuclei.

Świątecki also did some research in chaos theory and its implications for nuclear dynamics.

Honors and awards In 1973, Świątecki became a member of the Royal Danish Academy of Sciences and Letters. of the Polish Physical Society (for which he was a laureate in 1989), and received an honorary degree from the Jagiellonian University in Kraków in 2000.