|At the beginning Ununtrium was produced via decay of element 115, Ununpentium.|
287115Uup -> 283113Uut + 42He
288115Uup -> 284113Uut + 42He
Japanese scientist synthesize Ununtrium by bombardment of a Bismuth-209 target by a beam of Zinc-70 nuclei accelerated to the 10% of the speed of light by RIKEN heavy ion linear accelerator. The total time of bombardment was about 1920 hours.
20983Bi + 7030Zn -> 279113Uut -> 278113Uut + n