Editing Oganesson (section)

===Confirmation===
In December 2015, the [[IUPAC/IUPAP Joint Working Party|Joint Working Party]] of international scientific bodies [[International Union of Pure and Applied Chemistry]] (IUPAC) and [[International Union of Pure and Applied Physics]] (IUPAP) recognized the element's discovery and assigned the priority of the discovery to the Dubna–Livermore collaboration.<ref>[https://www.iupac.org/news/news-detail/article/discovery-and-assignment-of-elements-with-atomic-numbers-113-115-117-and-118.html Discovery and Assignment of Elements with Atomic Numbers 113, 115, 117 and 118]. IUPAC (30 December 2015)</ref> This was on account of two 2009 and 2010 confirmations of the properties of the granddaughter of <sup>294</sup>Og, <sup>286</sup>Fl, at the [[Lawrence Berkeley National Laboratory]], as well as the observation of another consistent decay chain of <sup>294</sup>Og by the Dubna group in 2012. The goal of that experiment had been the synthesis of <sup>294</sup>Ts via the reaction <sup>249</sup>Bk(<sup>48</sup>Ca,3n), but the short half-life of <sup>249</sup>Bk resulted in a significant quantity of the target having decayed to <sup>249</sup>Cf, resulting in the synthesis of oganesson instead of [[tennessine]].<ref>{{cite journal |last1=Karol |first1=Paul J. |last2=Barber |first2=Robert C. |last3=Sherrill |first3=Bradley M. |last4=Vardaci |first4=Emanuele |last5=Yamazaki |first5=Toshimitsu |date=29 December 2015 |title=Discovery of the element with atomic number Z = 118 completing the 7th row of the periodic table (IUPAC Technical Report) |journal=Pure Appl. Chem. |volume=88 |issue=1–2 |pages=155–160 |doi=10.1515/pac-2015-0501 |s2cid=102228960 |url=https://zenodo.org/record/6472870 |doi-access=free }}</ref>

From 1 October 2015 to 6 April 2016, the Dubna team performed a similar experiment with <sup>48</sup>Ca projectiles aimed at a mixed-isotope californium target containing <sup>249</sup>Cf, <sup>250</sup>Cf, and <sup>251</sup>Cf, with the aim of producing the heavier oganesson isotopes <sup>295</sup>Og and <sup>296</sup>Og. Two beam energies at 252&nbsp;MeV and 258&nbsp;MeV were used. Only one atom was seen at the lower beam energy, whose decay chain fitted the previously known one of <sup>294</sup>Og (terminating with spontaneous fission of <sup>286</sup>Fl), and none were seen at the higher beam energy. The experiment was then halted, as the glue from the sector frames covered the target and blocked evaporation residues from escaping to the detectors.<ref name="Dubna2016">{{cite conference |title=Results from the Recent Study of the <sup>249–251</sup>Cf + <sup>48</sup>Ca Reactions |first1=A. A. |last1=Voinov |first2=Yu. Ts |last2=Oganessian |first3=F. Sh. |last3=Abdullin |first4=N. T. |last4=Brewer |first5=S. N. |last5=Dmitriev |first6=R. K. |last6=Grzywacz |first7=J. H. |last7=Hamilton |first8=M. G. |last8=Itkis |first9=K. |last9=Miernik |first10=A. N. |last10=Polyakov |first11=J. B. |last11=Roberto |first12=K. P. |last12=Rykaczewski |first13=A. V. |last13=Sabelnikov |first14=R. N. |last14=Sagaidak |first15=I. V. |last15=Shriokovsky |first16=M. V. |last16=Shumeiko |first17=M. A. |last17=Stoyer |first18=V. G. |last18=Subbotin |first19=A. M. |last19=Sukhov |first20=Yu. S. |last20=Tsyganov |first21=V. K. |last21=Utyonkov |first22=G. K. |last22=Vostokin |year=2016 |conference=Exotic Nuclei |editor1-first=Yu. E. |editor1-last=Peninozhkevich |editor2-first=Yu. G. |editor2-last=Sobolev |book-title=Exotic Nuclei: EXON-2016 Proceedings of the International Symposium on Exotic Nuclei |pages=219–223 |isbn=9789813226555}}</ref> The production of <sup>293</sup>Og and its daughter <sup>289</sup>Lv, as well as the even heavier isotope <sup>297</sup>Og, is also possible using this reaction. The isotopes <sup>295</sup>Og and <sup>296</sup>Og may also be produced in the fusion of <sup>248</sup>Cm with <sup>50</sup>Ti projectiles.<ref name="Dubna2016"/><ref>{{cite news |last=Sychev |first=Vladimir |date=8 February 2017 |title=Юрий Оганесян: мы хотим узнать, где кончается таблица Менделеева | trans-title=Yuri Oganessian: we want to know where the Mendeleev table ends |url=https://ria.ru/interview/20170208/1487412085.html |language=ru |access-date=31 March 2017 |work=[[RIA Novosti]]}}</ref><ref>
{{cite web |url=https://cyclotron.tamu.edu/she2015/assets/pdfs/presentations/Roberto_SHE_2015_TAMU.pdf |title=Actinide Targets for Super-Heavy Element Research |last=Roberto |first=J. B. |date=31 March 2015 |website=cyclotron.tamu.edu |publisher=Texas A & M University |access-date=28 April 2017}}</ref> A search beginning in summer 2016 at RIKEN for <sup>295</sup>Og in the 3n channel of this reaction was unsuccessful, though the study is planned to resume; a detailed analysis and cross section limit were not provided. These heavier and likely more stable isotopes may be useful in probing the chemistry of oganesson.<ref name="conseil">{{cite conference |last=Hauschild |first=K. |title=Superheavy nuclei at RIKEN, Dubna, and JYFL |date=26 June 2019 |conference=Conseil Scientifique de l'IN2P3 |url=https://in2p3.cnrs.fr/sites/institut_in2p3/files/page/2019-07/6-Pres-HAUSCHILD_-compresse%CC%81.pdf |access-date=31 July 2019}}</ref><ref name="conseil2">{{cite conference |last=Hauschild |first=K. |title=Heavy nuclei at RIKEN, Dubna, and JYFL |date=2019 |conference=Conseil Scientifique de l'IN2P3 |url=https://in2p3.cnrs.fr/sites/institut_in2p3/files/page/2019-07/6-Doc-HAUSCHILD-comp.pdf |access-date=1 August 2019}}</ref>