Editing Flerovium (section)

===Confirmed discovery===
The now-confirmed discovery of flerovium was made in June 1999 when the Dubna team repeated the first reaction from 1998. This time, two atoms of flerovium were produced; they alpha decayed with half-life 2.6&nbsp;s, different from the 1998 result.<ref name="00Og01">{{cite journal|last1=Oganessian|first1=Yu. Ts.|display-authors=etal|date=2000|title=Synthesis of superheavy nuclei in the <sup>48</sup>Ca + <sup>244</sup>Pu reaction: <sup>288</sup>114|journal=[[Physical Review C]]|volume=62|issue=4|page=041604|bibcode=2000PhRvC..62d1604O|doi=10.1103/PhysRevC.62.041604|url=https://cds.cern.ch/record/402957/files/SCAN-9910002.pdf?version=1}}</ref> This activity was initially assigned to <sup>288</sup>Fl in error, due to the confusion regarding the previous observations that were assumed to come from <sup>289</sup>Fl. Further work in December 2002 finally allowed a positive reassignment of the June 1999 atoms to <sup>289</sup>Fl.<ref name="04Og01">{{cite journal|last1=Oganessian|first1=Yu. Ts.|display-authors=etal|date=2004|title=Measurements of cross sections for the fusion-evaporation reactions <sup>244</sup>Pu(<sup>48</sup>Ca,xn)<sup>292−x</sup>114 and <sup>245</sup>Cm(<sup>48</sup>Ca,xn)<sup>293−x</sup>116|journal=[[Physical Review C]]|volume=69|issue=5|page=054607|bibcode=2004PhRvC..69e4607O|doi=10.1103/PhysRevC.69.054607|url=http://link.aps.org/abstract/PRC/V69/E054607/|doi-access=free}}</ref>

In May 2009, the Joint Working Party (JWP) of [[IUPAC]] published a report on the discovery of copernicium in which they acknowledged discovery of the isotope <sup>283</sup>Cn.<ref>{{cite journal|last1=Barber|first1=R. C.
|last2=Gäggeler|first2=H. W.
|last3=Karol|first3=P. J.
|last4=Nakahara|first4=H.
|last5=Vardaci|first5=E.
|last6=Vogt|first6=E.
|date=2009
|title=Discovery of the element with atomic number 112 (IUPAC Technical Report)
|journal=[[Pure and Applied Chemistry]]
|volume=81|page=1331|issue=7
|doi=10.1351/PAC-REP-08-03-05
|s2cid=95703833
|url=http://doc.rero.ch/record/297412/files/pac-rep-08-03-05.pdf
}}</ref> This implied the discovery of flerovium, from the acknowledgement of the data for the synthesis of <sup>287</sup>Fl and <sup>291</sup>[[livermorium|Lv]], which decay to <sup>283</sup>Cn. The discovery of flerovium-286 and -287 was confirmed in January 2009 at Berkeley. This was followed by confirmation of flerovium-288 and -289 in July 2009 at [[Gesellschaft für Schwerionenforschung]] (GSI) in Germany. In 2011, IUPAC evaluated the Dubna team's 1999–2007 experiments. They found the early data inconclusive, but accepted the results of 2004–2007 as flerovium, and the element was officially recognized as having been discovered.<ref name="jwr">{{cite journal|last1=Barber|first1=R. C.|last2=Karol|first2=P. J.|last3=Nakahara|first3=H.|last4=Vardaci|first4=E.|last5=Vogt|first5=E. W.|date=2011|title=Discovery of the elements with atomic numbers greater than or equal to 113 (IUPAC Technical Report)|journal=[[Pure and Applied Chemistry]]|volume=83|issue=7|page=1485|doi=10.1351/PAC-REP-10-05-01|doi-access=free}}</ref>