Predictions for Nuclei of a New Element 117

Predictions for the decay chains of the nuclei 293117 and 294117 are done within a macroscopic-microscopic model. The nuclei are planned to be synthesized in the reaction 249Bk + 48Ca (4n and 3n channels), to be performed in Dubna. It is obtained in our study that at least three decays in both 293117 and 294117 chains should be observed. Thus, at least six new superheavy nuclides and one new superheavy element should be seen, if cross-sections for the reactions are sufficiently large. Additionally, it is expected that the decay chain of 294117 would be the first one in which the isotope of the element 113, 286113, has a chance to be studied chemically. (author)