Oganessian, Yuri

Oganessian, Yuri Ts., Vladimir K. Utyonkov, and Kenton J. Moody. Voyage to Superheavy Island. Scientific American 282 (January 2000) 63-67. This is a highly accessible discussion of the synthesis of superheavy elements using both cold fusion and hot fusion techniques. 

Russian physicist Yuri Oganessian Plutonium-244 bombarded with the nuclei of calcium-48 produced this superheavy and relatively stable element. 

At about the same time, another claim to the discovery of element 106 was made by a Russian group working at the Laboratory of Nuclear Reactions at the Joint Institute for Nuclear Reactions in Dubna, Russia — Georgiy N. Flerov, Yuri Ts. Oganessian, Yu. P. Tretyakov, A. S. Iljinov, A. G. Demin, A. A. Pleve, S. P. Tret yakova, V. M. Plotko, M. P. Ivanov, N. A. Danilov, and Yu. S. Korotkin. They reported the observation of a spontaneous fission activity with a half-life of 4-10 ms, produced by bombarding 82 Pb with ItCr, and which they assigned to 106 on the basis of reaction systematics. 

The transuranium elements up to 106 were synthesized by accelerating neutrons or very light nuclei into other actinides including costly, unstable artificial elements such as californium (98). In 1973, Yuri Oganessian (1933- ) and Alexander G. Demin in Dubna developed the concept of soft fusion or cold fusion (not to be confused with the unrelated cold fusion debacle of 1989) which they successfully... 

In 1998, Yuri Oganessian and his research group in Dubna obtained isotopes from Lawrence Berkeley National Laboratory and accelerated a Ca beam into a Pu target in a hot fusion experiment. Calcium 48, with Z = 20 and N = 28, is doubly magic and Pu is the most neutron-rich plutonium isotope. The JINR observed two isotopes of element 114 (ununquadrium or Uuq) uq, = 27 s and Uuq, V, = 2 s. The... 

Soviet physicists Georgy Llerov, Yuri Oganessian, and... 

The prime mission objective for the landing craft is to determine if life is or ever has been present on the planet, using chemical analysis of the soil and atmosphere. Probe telemetry reports high concentrations of iron in the soil but no sign of life. Recombinant DNA technique identified by American scientists Stanley Gohen and Herbert Boyer. Yuri Oganessian and his colleagues at the Joint Institute for Nuclear Research in Dubna, USSR, claim to have discovered the element bohrium. 

Russian physicists Yuri Oganessian, Vladimir Utyonkov... 

Bohrium 1981 Gesellschaft fiir Schwerionenforschung [GSI] (Germany) Yuri Oganessian and colleagues at the Joint Institute for Nuclear Research [JINR] (USSR)... 

Ununquadium 1998 Yuri Oganessian, Vladimir Utyonkov and colleagues at the JINR (Russia)... 

See Problem 7.49 for further information about oganium, a name we have given to element 114 after the leader of the team that discovered it, Yuri Oganessian. Note.- Vae. official name of element 114 is actually ununquadium)... 

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