Kurchatov

New data, reportedly issued by Soviet scientists, have reduced the half-life of the isotope they worked with from 0.3 to 0.15 s. The Dubna scientists suggest the name kurchatauium and symbol Ku for element 104, in honor of Igor Vasilevich Kurchatov (1903-1960), former Head of Soviet Nuclear Research. 

The acceptance of the name was premature because both Russian and American efforts now completely rule out the possibility of any isotope of Element 102 having a half-life of 10 min in the vicinity of 8.5 MeV. Early work in 1957 on the search for this element, in Russia at the Kurchatov Institute, was marred by the assignment of 8.9 +/- 0.4 MeV alpha radiation with a half-life of 2 to 40 sec, which was too indefinite to support discovery claims. 

J. A. Oberteuffer, Magnetic Separation M Kevieiv of Principles, Devices and Applications, Institute of Electrical and Electronics Engineers, Inc., 1977. P. A. Cliermemnykli and I. V. Kurchatov, IEEE Trans. Magnetics, 28(1), 651—658 (Jan. 1992). 

Russian Research Centre Kurchatov Institute , Moscow 123182, Russia... 

I. V. Kurchatov Institute of Atomic Energy Moscow 123182 Russia... 

Ring-shaped nuclear fusion research reactor Tokamak 15 at the Kurchatov Institute, Moscow, Russia. (Photo Researohers Ino.)... 

Striganov, A. R., Report IAE-2965, Kurchatov Institute of Atomic Energy, Moscow, 1978 (in Russian). Translated by G. V. Shalimoff, Lawrence Berkeley Laboratory. 

GEORGYBARSAMYAN Samsung Coming Co., Ltd, Dong-Suwon, Kyeongii-Do, Korea, 442-600. Present address Solvay S.A. Moscow Office, Moscow, 123310, Russia. VLADIMIR B. SOKOLOV Russian Research Center Kurchatov Institute, Moscow 123182, Russia... 

The chemical and physical properties of Unq (or rutherfordium) are homologous with the element hafnium ( jHf), located just above it in group 4 (fVB) in the periodic table. It was first claimed to be produced artificially by the Joint Institute for Nuclear Research (JINR) located in Dubna, Russia. The Russian scientists used a cyclotron that smashed a target of plutonium-242 with very heavy ions of neon-22, resulting in the following reaction Pu-242 + jjjNe-22 —> jj, Unq-260 + 4 n-1 (alpha radiation). The Russians named Unq-260 kurcha-tovium (Ku-260) for the head of their center, Ivan Kurchatov. (See details in the next section, History. )... 

During earlier work al Physics International and the Kurchatov Institute and Sandia Laboratories, a solution to the problem of power concentration was demonstrated, again beyond the scope of this article. See also Fig. 4. 

The storage of cold neutrons (the idea and the experiment) was registered officially as a discovery in 1958. Ya.B. was awarded the Kurchatov gold medal for this work. 

Several large experiments are planned which should demonstrate pellet gain in excess of unity, i.e. scientific feasibility. The experiments with laser drivers are under development e.g. at Lawrence Livermore Laboratory and at Los Alamos Scientific Laboratory (USA)20 those with relativistic electron beams at Sandia Laboratory, Albuquerque (USA)21 and at Kurchatov Institute (USSR). They are scheduled to start operation in the early 1980 s. 

Russian Research Centre "Kurchatov Institute", Hydrogen Energy Plasma Technology Institute, 123182 Moscow, Russia... 

Amount of absorbed hydrogen was checked by thermodesorption method. All samples were analyzed by powder X-ray diffraction using a ThermoARL diffractometer (/.( ll 1.5406 A). Neutron data were obtained on DISK diffractometer at the Kurchatov Science Centre)). Deuterium rather than hydrogen has been used in order to reduce the incoherent scattering. Obtained results were refined with Fullprof and Rietan programs. 

Prof. V.A. Somenkov RAS, Chemogolovka Russian Research Center "Kurchatov Russia... 

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