 The team repeated the experiment in April – May 2005 and detected 8 atoms of livermorium . The measured decay data confirmed the assignment of the first @-@ discovered isotope as 293Lv . In this run , the team also observed the isotope 292Lv for the first time . In further experiments from 2004 to 2006 , the team replaced the curium @-@ 248 target with the lighter curium isotope curium @-@ 245 . Here evidence was found for the two isotopes 290Lv and 291Lv . 
