6533b838fe1ef96bd12a4f48
RESEARCH PRODUCT
First superheavy element experiments at the GSI recoil separator TASCA: The production and decay of element 114 in thePu244(Ca48,3-4n) reaction
Susanta LahiriAndreas TürlerK. E. GregorichDieter AckermannJ. KrierMatthias SchädelMichael BlockBettina LommelPetra Thörle-pospiechJ. V. KratzH. SchaffnerR.-d. HerzbergKlaus EberhardtAlexander YakushevA. V. GorshkovDirk RudolphJadambaa KhuyagbaatarJ. M. GatesCh. E. DüllmannMoumita MaitiF. P. HeßbergerEgon JägerJulia EvenJnaneswari GellankiJörg RunkeR. GraegerB. SchaustenU. ForsbergBirgit KindlerE. SchimpfW. HartmannJuha UusitaloM. WegrzeckiJ. SteinerA. SemchenkovA. HübnerN. KurzW. BrüchleH. G. EsselP. A. EllisonD. LiebeNorbert WiehlJ. P. OmtvedtHeino NitscheE. ParrJ. DvorakD. HildL. L. Anderssonsubject
Nuclear physicsPhysicsNuclear reactionNuclear and High Energy PhysicsIsotopeNeutron emissionTransactinide elementDecay chainAlpha decayTransuranium elementRadioactive decaydescription
Experiments with the new recoil separator, Transactinide Separator and Chemistry Apparatus (TASCA), at the GSI were performed by using beams of Ca-48 to irradiate targets of Pb206-208, which led to the production of No252-254 isotopes. These studies allowed for evaluation of the performance of TASCA when coupled to a new detector and electronics system. By following these studies, the isotopes of element 114 ((288-291)114) were produced in irradiations of Pu-244 targets with Ca-48 beams at compound nucleus excitation energies around 41.7 and 37.5 MeV, demonstrating TASCA's ability to perform experiments with picobarn-level cross sections. A total of 15 decay chains were observed and were assigned to the decay of 288-291114. A new a-decay branch in (281)Ds was observed, leading to the new nucleus (277)Hs. (Less)
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-05-27 | Physical Review C |