Synthesis of a New Element with Atomic Number Z=117

Journal Article · Fri Apr 09 00:00:00 EDT 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.104.142502· OSTI ID:21431095

Oganessian, Yu Ts; Abdullin, F Sh; Dmitriev, S N; Itkis, M G; Lobanov, Yu V; Mezentsev, A N; Polyakov, A N; Sagaidak, R N; Shirokovsky, I V; Subbotin, V G; Sukhov, A M; Tsyganov, Yu S; Utyonkov, V K; Voinov, A A; Vostokin, G K ^[1]; Bailey, P D; Benker, D E; Ezold, J G; Porter, C E; Riley, F D ^[2]

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1. Joint Institute for Nuclear Research, RU-141980 Dubna (Russian Federation)
2. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)

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

• OSTI ID: 21431095
• Journal Information: Physical Review Letters, Vol. 104, Issue 14; Other Information: DOI: 10.1103/PhysRevLett.104.142502; (c) 2010 The American Physical Society; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ATOMIC NUMBER
BERKELIUM 249
CALCIUM 48
DUBNA
ELEMENT 117
HEAVY ION FUSION REACTIONS
ISOTOPE PRODUCTION
PARTICLE DECAY
STABILITY
TRANSACTINIDE ELEMENTS
ACTINIDE NUCLEI
ALKALINE EARTH ISOTOPES
ALPHA DECAY RADIOISOTOPES
BERKELIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALCIUM ISOTOPES
DAYS LIVING RADIOISOTOPES
DECAY
EASTERN EUROPE
ELEMENTS
EUROPE
EVEN-EVEN NUCLEI
HEAVY ION REACTIONS
HEAVY NUCLEI
INTERMEDIATE MASS NUCLEI
ISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUCLEOSYNTHESIS
ODD-EVEN NUCLEI
RADIOISOTOPES
RUSSIAN FEDERATION
SPONTANEOUS FISSION RADIOISOTOPES
STABLE ISOTOPES
SYNTHESIS
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS