Eleven new heaviest isotopes of elements Z = 105 to Z = 117 identified among the products of 249 Bk + 48 Ca reactions
نویسندگان
چکیده
Yu. Ts. Oganessian,1,* F. Sh. Abdullin,1 P. D. Bailey,2 D. E. Benker,2 M. E. Bennett,3 S. N. Dmitriev,1 J. G. Ezold,2 J. H. Hamilton,4 R. A. Henderson,5 M. G. Itkis,1 Yu. V. Lobanov,1 A. N. Mezentsev,1 K. J. Moody,5 S. L. Nelson,5 A. N. Polyakov,1 C. E. Porter,2 A. V. Ramayya,4 F. D. Riley,2 J. B. Roberto,2 M. A. Ryabinin,6 K. P. Rykaczewski,2 R. N. Sagaidak,1 D. A. Shaughnessy,5 I. V. Shirokovsky,1 M. A. Stoyer,5 V. G. Subbotin,1 R. Sudowe,3 A. M. Sukhov,1 R. Taylor,2 Yu. S. Tsyganov,1 V. K. Utyonkov,1 A. A. Voinov,1 G. K. Vostokin,1 and P. A. Wilk5 1Joint Institute for Nuclear Research, RU-141980 Dubna, Russian Federation 2Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 3University of Nevada Las Vegas, Las Vegas, Nevada 89154, USA 4Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235, USA 5Lawrence Livermore National Laboratory, Livermore, California 94551, USA 6Research Institute of Atomic Reactors, RU-433510 Dimitrovgrad, Russian Federation (Received 15 March 2011; published 18 May 2011)
منابع مشابه
48Ca+249Bk fusion reaction leading to element Z = 117: long-lived α-decaying 270Db and discovery of 266Lr.
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 radioactive decay of evaporation residues and their α-decay products was studied using a detection setup that allowed measuring decays of single atomic nuclei with half-lives between sub-μs and a few ...
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