6533b854fe1ef96bd12ae066
RESEARCH PRODUCT
Search for elements 119 and 120
Michael BlockMahananda DasguptaS. MinamiSusanta LahiriM. WegrzeckiN. KurzRose A. BollAndreas TürlerAndreas TürlerJ. V. KratzR-d HerzbergDaniel CoxJames B. RobertoClaes FahlanderJadambaa KhuyagbaatarDirk RudolphK. P. RykaczewskiA. HübnerG. K. PangK. MiernikN. GharibyanB. SchaustenJ. HoffmannL.-l. AnderssonBettina LommelLuis SarmientoU. ForsbergMatthias SchädelMatthias SchädelJ. H. HamiltonJuha UusitaloKenneth E. GregorichHeino NitscheH. BrandJulia EvenMoumita MaitiJ. M. GatesDavid HindePhilippos PapadakisPhilippos PapadakisM. LaatiaouiNorbert WiehlKlaus EberhardtW. HartmannJ. RunkeD. A. ShaughnessyDieter AckermannPetra Thörle-pospiechK. TinschertR. LangC. MokryBirgit KindlerJon Petter OmtvedtCh. E. DüllmannCh. E. DüllmannS. M. Van CleveJ. SteinerD. RenischA. K. MistryA. K. MistryM. AsaiMaurits EversAlexander YakushevPatrick SteineggerPatrick SteineggerA. SemchenkovPavel GolubevV. YakushevaX. DerkxEvgeny E. TereshatovJ. KrierNorbert TrautmannT. Torres De HeidenreichA. Di NittoF. P. HeßbergerR. HollingerEgon Jägersubject
Physicselement 119010308 nuclear & particles physicselement 120Superheavy Elements01 natural sciencesIsland of stabilityRecoil separatorNuclear physicssuperheavy elementsProduction cross sectionSubatomic Physics0103 physical sciences540 Chemistry570 Life sciences; biologylow and intermediate energy heavy-ion reactionsAtomic numberIrradiationSensitivity (control systems)ydinfysiikka010306 general physicsBeam energydescription
A search for production of the superheavy elements with atomic numbers 119 and 120 was performed in the 50Ti+249Bk and 50Ti+249Cf fusion-evaporation reactions, respectively, at the gas-filled recoil separator TASCA at GSI Darmstadt, Germany. Over four months of irradiation, the 249Bk target partially decayed into 249Cf, which allowed for a simultaneous search for both elements. Neither was detected at cross-section sensitivity levels of 65 and 200 fb for the 50Ti+249Bk and 50Ti+249Cf reactions, respectively, at a midtarget beam energy of Elab=281.5 MeV. The nonobservation of elements 119 and 120 is discussed within the concept of fusion-evaporation reactions including various theoretical predictions on the fission-barrier heights of superheavy nuclei in the region of the island of stability. peerReviewed
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-12-02 | Physical Review C |