The Russian nuclear scientists from the Joint Institute for Nuclear Research (JINR, Dubna) was named the unexpected decision of the Joint Commission of the International Union of Pure and Applied Chemistry (IUPAC) to recognize the discoverer of the 113th element of the periodic table of the Japan Institute of Natural Sciences (RIKEN).
«This is somewhat unexpected for us the solution. Especially in practice IUPAC ample precedent recognition of the “joint” priority “, – quotes TASS message JINR.
«This is somewhat unexpected for us the solution. Especially in practice IUPAC ample precedent recognition of the “joint” priority »
In the Russian Institute say that the first time the 113th element (isotope of mass 284, and a lifetime of about one second) has been registered at JINR in 2003 as a child, the product of decay of the isotope of element 115 with a mass of 288. In 2004, according to the JINR experts from RIKEN conducted an experiment, which was registered by the isotope of the 113th element with the mass and lifetime of 278 milliseconds.
According to the report, for more than 10 years of experiment, Japanese scientists have been able to register the four events the synthesis of a new element. Russian nuclear scientists, in turn, over the period of about 100 events registered the birth of a new item and conducted experiments to study its chemical properties.
«We are delighted for our colleagues from RIKEN, the more so because the head of works professor Koske Morita to some extent a pupil of Dubna, where he was at JINR for quite a long time learned the” basics “of synthesis of new elements. However, the chosen method of synthesis of RIKEN scientists STE yourself completely exhausted, and today they are planning future experiments only in Dubna on the proposed method, “- said the Institute.
December 31 reported that scientists at the Japanese RIKEN institute recognized by the creators of the 113th element of the periodic table, which is likely to be called “Japan.”
The fight for the title of “discoverer” of the 113th element has been going on for more than 10 years between the Japanese scientists and Russian-American team of scientists. Evidence and studies on the synthesis of the 113th element throughout this time have been studied by international organizations.
In September 2004, Japanese scientists led by Kosuke Morita synthesized 113th element dispersed on the accelerator and pitting zinc-30 and Bi-83. As a result, they were able to capture three decay chains corresponding to the event of birth 113th member in 2004, 2005 and 2012.
In turn, in February 2004, in Dubna, Russian-American team of scientists announced the creation of the 113th element in the synthesis of element 115 and offered to call him Becquerel. However, the International Union of Pure and Applied Chemistry (IUPAC) found insufficient evidence that has been created is the 113th element.
In nature, there are no elements heavier than uranium, that is, with an atomic number (number of protons in its nucleus) is greater than 92. They are produced by artificial synthesis.
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