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- Publications
- Influence
48Ca+249Bk fusion reaction leading to element Z = 117: long-lived α-decaying 270Db and discovery of 266Lr.
- J. Khuyagbaatar, A. Yakushev, +69 authors V. Yakusheva
- Chemistry, Medicine
- Physical review letters
- 1 May 2014
The superheavy element with atomic number Z=117 was produced as an evaporation residue in the (48)Ca+(249)Bk fusion reaction at the gas-filled recoil separator TASCA at GSI Darmstadt, Germany. The… Expand
Production and decay of element 114: high cross sections and the new nucleus 277Hs.
- Ch E Düllmann, M. Schaedel, +42 authors N. Wiehl
- Medicine, Chemistry
- Physical review letters
- 22 December 2009
The fusion-evaporation reaction 244Pu(48Ca,3-4n){288,289}114 was studied at the new gas-filled recoil separator TASCA. Thirteen correlated decay chains were observed and assigned to the production… Expand
First Superheavy Element Experiments at the GSI Recoil Separator TASCA: The Production and Decay of Element 114 in the 244Pu(48Ca,3-4n) Reaction
- J. Gates, C. E. Düllmann, +45 authors N. Wiehl
- Physics
- 27 May 2011
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… Expand
Spectroscopy of element 115 decay chains.
- D. Rudolph, U. Forsberg, +48 authors N. Wiehl
- Medicine, Physics
- Physical review letters
- 10 September 2013
A high-resolution α, x-ray, and γ-ray coincidence spectroscopy experiment was conducted at the GSI Helmholtzzentrum für Schwerionenforschung. Thirty correlated α-decay chains were detected following… Expand
Gas chemical investigation of hafnium and zirconium complexes with hexafluoroacetylacetone using preseparated short-lived radioisotopes
- Ch. E. Düllmann, K. E. Gregorich, +9 authors H. Nitsche
- Chemistry
- 2009
Abstract Volatile metal complexes of the group 4 elements Zr and Hf with hexafluoroacetylacetonate (hfa) have been studied using short-lived radioisotopes of the metals. The new technique of physical… Expand
On the discovery of new elements (IUPAC/IUPAP Provisional Report)
- S. Hofmann, S. Dmitriev, C. Fahlander, J. Gates, J. B. Roberto, H. Sakai
- Chemistry
- 1 November 2018
Abstract Almost thirty years ago the criteria that are currently used to verify claims for the discovery of a new element were set down by the comprehensive work of a Transfermium Working Group, TWG,… Expand
Multi-quasiparticle states in (256)Rf
- H. Jeppesen, I. Dragojević, +24 authors F. Xu
- Physics
- 15 March 2009
Excited states in (256)Rf were populated via the Pb-208(Ti-50,2n) fusion-evaporation reaction. Delayed gamma-ray and electron decay spectroscopy was performed and three isomeric states in (256)Rf h… Expand
New superheavy element isotopes: ²⁴²Pu(⁴⁸Ca,5n) ²⁸⁵114.
- P. A. Ellison, K. E. Gregorich, +17 authors H. Nitsche
- Physics, Medicine
- Physical review letters
- 22 October 2010
The new, neutron-deficient, superheavy element isotope ²⁸⁵114 was produced in ⁴⁸Ca irradiations of ²⁴²Pu targets at a center-of-target beam energy of 256 MeV (E*=50 MeV). The α decay of ²⁸⁵114was… Expand
First Direct Measurements of Superheavy-Element Mass Numbers.
- J. Gates, G. K. Pang, +19 authors M. Stoyer
- Physics, Medicine
- Physical review letters
- 28 November 2018
An experiment was performed at Lawrence Berkeley National Laboratory's 88-in. Cyclotron to determine the mass number of a superheavy element. The measurement resulted in the observation of two… Expand
Decay spectroscopy of element 115 daughters: ²⁸⁰Rg → ²⁷⁶Mt and ²⁷⁶Mt → ²⁷²Bh
- J. Gates, K. Gregorich, O. Gothe, W. Loveland
- Physics
- 3 August 2015
Author(s): Gates, JM; Gregorich, KE; Gothe, OR; Uribe, EC; Pang, GK; Bleuel, DL; Block, M; Clark, RM; Campbell, CM; Crawford, HL; Cromaz, M; Di Nitto, A; Dullmann, CE; Esker, NE; Fahlander, C;… Expand