<P> In December 2015, the 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 . This was on account of two 2009 and 2010 confirmations of the properties of the granddaughter of Og, Fl, at the Lawrence Berkeley National Laboratory, as well as the observation of another consistent decay chain of Og by the Dubna group in 2012 . The goal of that experiment had been the synthesis of Ts via the reaction Bk (Ca, 3n), but the short half - life of Bk resulted in a significant quantity of the target having decayed to Cf, resulting in the synthesis of oganesson instead of tennessine . </P> <P> From 1 October 2015 to 6 April 2016, the Dubna team performed a similar experiment with Ca projectiles aimed at a mixed - isotope californium target containing Cf, Cf, and Cf . Two beam energies at 252 MeV and 258 MeV were used . Only one atom was seen at the lower beam energies, whose decay chain fitted the previously known one of Og, 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 . The Dubna team plans to repeat this experiment in 2017 . </P> <P> Using Mendeleev's nomenclature for unnamed and undiscovered elements, oganesson is sometimes known as eka - radon (until the 1960s as eka - emanation, emanation being the old name for radon). In 1979, IUPAC assigned the systematic placeholder name ununoctium to the undiscovered element, with the corresponding symbol of Uuo, and recommended it to be used until after confirmed discovery of the element . Although widely used in the chemical community on all levels, from chemistry classrooms to advanced textbooks, the recommendations were mostly ignored among scientists in the field, who called it "element 118", with the symbol of E118, (118), or even simply 118 . </P> <P> Before the retraction in 2002, the researchers from Berkeley had intended to name the element ghiorsium (Gh), after Albert Ghiorso (a leading member of the research team). </P>

What is the difference between oganesson and ununoctium
find me the text answering this question