Synthesis of a New Element with Atomic Number  Z  =  117

Oganessian, Yu. Ts.; Abdullin, F. Sh.; Bailey, P. D.; Benker, Dennis; Bennett, Megan; Dmitriev, S. N.; Ezold, Julie; Hamilton, J. H.; Henderson, R.; Иткис, М. Г.; Lobanov, Yu. V.; Mezentsev, Andrey; Moody, K. J.; Nelson, Stephen; Polyakov, А. N.; Porter, C. E.; Ramayya, A. V.; Riley, F. D.; Roberto, J. B.; Ryabinin, M. A.; Rykaczewski, K. P.; Sagaidak, R. N.; Shaughnessy, D. A.; Shirokovsky, I. V.; Stoyer, M. A.; Subbotin, V. G.; Sudowe, Ralf; Sukhov, A. M.; Tsyganov, Yu. S.; Utyonkov, V. K.; Voinov, A. A.; Vostokin, G. K.; Wilk, P. A.

doi:10.1103/physrevlett.104.142502

articlePhysical Review LettersApr 9, 2010LVBRONZE OA

Synthesis of a New Element with Atomic Number Z = 117

YTYu. Ts. Oganessian FSF. Sh. Abdullin PDP. D. Bailey DBDennis Benker MBMegan Bennett

Joint Institute for Nuclear Research · Oak Ridge National Laboratory · +4 more institutions

PubMed

Indexed incrossrefpubmed

Abstract

The discovery of a new chemical element with atomic number Z=117 is reported. The isotopes (293)117 and (294)117 were produced in fusion reactions between (48)Ca and (249)Bk. 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 Z > or = 111, validating the concept of the long sought island of enhanced stability for superheavy nuclei.

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Physics
Isotope
Nuclear physics

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