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Synthesis of a New Element with Atomic Number
Yu. Ts. Oganessian1,*,F. Sh. Abdullin1,P. D. Bailey2,D. E. Benker2,M. E. Bennett3,S. N. Dmitriev1,J. G. Ezold2,J. H. Hamilton4,R. A. Henderson5et al.
M. G. Itkis1,Yu. V. Lobanov1,A. N. Mezentsev1,K. J. Moody5,S. L. Nelson5,A. N. Polyakov1,C. E. Porter2,A. V. Ramayya4,F. D. Riley2,J. B. Roberto2,M. A. Ryabinin6,K. P. Rykaczewski2,R. N. Sagaidak1,D. A. Shaughnessy5,I. V. Shirokovsky1,M. A. Stoyer5,V. G. Subbotin1,R. Sudowe3,A. M. Sukhov1,Yu. S. Tsyganov1,V. K. Utyonkov1,A. A. Voinov1,G. K. Vostokin1, andP. 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 Livemore National Laboratory, Livermore, California 94551, USA
- 6Research Institute of Atomic Reactors, RU-433510 Dimitrovgrad, Russian Federation
- *oganessian@jinr.ru
Phys. Rev. Lett.104, 142502 –Published 9 April, 2010
DOI:https://doi.org/10.1103/PhysRevLett.104.142502
Abstract
The discovery of a new chemical element with atomic number is reported. The isotopes and were produced in fusion reactions between and. Decay chains involving 11 new nuclei were identified by means of the Dubna gas-filled recoil separator. The measured decay properties show a strong rise of stability for heavier isotopes with, validating the concept of the long sought island of enhanced stability for superheavy nuclei.
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This article appears in the following collection:
Transuranium Elements and thePhysical Review
This collection marks the 150th anniversary of Dmitri Mendeleev’s discovery of the Periodic Table of Elements.
Viewpoint
Exploring the island of superheavy elements
A collaboration of Russian and US physicists has created the superheavy element 117, an experimental achievement that fills in the final gap on the list of observed elements up to element 118.
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- Received 15 March 2010
© 2010 American Physical Society