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Energy splitting of the ground-state doublet in the nucleus 229Th.
The energy splitting of the 229Th ground-state doublet is measured to be 7.6+/-0.5 eV, significantly greater than earlier measurements. Gamma rays produced following the alpha decay of 233U (105… Expand
Synthesis of a new element with atomic number Z = 117.
- Y. T. Oganessian, F. Abdullin, +30 authors P. Wilk
- Physics, Medicine
- Physical review letters
- 9 April 2010
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… Expand
Synthesis of Superheavy Elements
- K. Moody
- Physics
- 2014
The Island of Stability of spherical superheavy nuclides exists at the extreme limit of the Chart of the Nuclides, beyond regions of nuclear stability associated with deformed nuclear shapes. In this… Expand
Experiments on the synthesis of element 115 in the reaction am-243(ca-48, xn) x-115-291
- Y. Oganessian, R. Lougheed, +23 authors M. A. Stoyer
- Physics
- 2 February 2004
Am (Ca, xn) 115 Yu.Ts. Oganessian, V.K. Utyonkov, Yu.V. Lobanov, F.Sh. Abdullin, A.N. Polyakov, I.V. Shirokovsky, Yu.S. Tsyganov, G.G. Gulbekian, S.L. Bogomolov, A.N. Mezentsev, S. Iliev, V.G.… Expand
Experiments on the synthesis of element 115 in the reaction 243 Am ( 48 Ca ,xn) 291-x 115
- Y. Oganessian, V. K. Utyonkoy, +23 authors R. Lougheed
- Physics
- 1 February 2004
Measurements of cross sections for the fusion-evaporation reactions 244 Pu ( 48 Ca ,xn ) 292-x 114 and 245 Cm ( 48 Ca ,xn ) 293-x 116
- Y. Oganessian, V. Utyonkov, +24 authors R. Lougheed
- Physics
- 1 May 2004
We have studied the excitation functions of the reactions 244Pu(48Ca,xn). Maximum cross sections for the evaporation of 3–5 neutrons in the complete-fusion reaction 244Pu+48Ca were measured to be… Expand
Synthesis of Superheavy Nuclei in the {sup 48}Ca + {number_sign}{sup 244}Pu Reaction
- Yuri Oganessian, V. Utyonkov, +19 authors R. Lougheed
- Chemistry, Physics
- 1 October 1999
In bombardment of {sup 244}Pu with {sup 48}Ca , we observed a decay sequence consisting of an implanted heavy atom, three subsequent {alpha} decays, and a spontaneous fission (SF), all correlated in… Expand
Review of even element super-heavy nuclei and search for element 120
- S. Hofmann, S. Heinz, +34 authors A. Yeremin
- Physics
- 28 June 2016
Abstract.The reaction
54Cr$ + $248Cm was investigated at the velocity filter SHIP at GSI, Darmstadt, with the intention to study production and decay properties of isotopes of element 120. Three… Expand
Gas phase chemical studies of superheavy elements using the Dubna gas-filled recoil separator - Stopping range determination
- David Wittwer, F. Abdullin, +31 authors P. Wilk
- Chemistry
- 2010
Abstract Currently, gas phase chemistry experiments with heaviest elements are usually performed with the gas-jet technique with the disadvantage that all reaction products are collected in a… Expand
Observation of the decay of 292 116
- Y. Oganessian, V. Utyonkov, +23 authors A. Tatarinov
- Physics
- 6 December 2000
We present the observation of the first decay event of the new nuclide {sup 292}116 in the running experiment on the synthesis of Z=116 nuclei in the reaction {sup 248}Cm+{sup 48}Ca. The experiment… Expand