In Dubna questioned in the opening of the 113th element of the Japanese – Russian newspaper

Joint Institute for Nuclear Research (JINR) in Dubna near Moscow, which is known as the world center of fundamental science and a kind of “factory” for the synthesis of new elements Periodic System, considered hasty and unilateral statement saying that the priority in the creation of the 113th element given Collaboration Institute RIKEN (Japan).

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“The official press release from the decision of IUPAC adopted before the publication of the reports of the Joint Commission of the IUPAC-IUPAP, – says the official comments of the Joint Institute for Nuclear Research, which is published on January 2nd. – Our attitude to the solution of 113 element will be determined only after a detailed study of these reports “.

It is necessary to clarify that the IUPAC (IUPAC) – is the International Union of Pure and Applied chemistry. A IUPAP (IUPAR) – The International Union of Pure and Applied Physics. Deciding What the research team (or scientific collaboration) to recognize the priority in this or that discovery, they have taken on an equal footing.

And this time it turned out that the December 30, 2015, in the literal sense “under the Christmas tree” in his own name IUPAC released an official press release on the discovery of new chemical elements with atomic numbers 113, 115, 117 and 118. And in it, said “RG” a spokesman for the JINR Boris Starchenko, has stated that “IUPAC on the results of the joint committee of the International Union of Pure and Applied Chemistry and the International Union of Pure and Applied Physics, confirmed the discovery of new chemical elements of Mendeleev’s Periodic Table with atomic numbers 113, 115, 117 and 118″.

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With regard to the 115 and 117 th elements, as expected, the right of discovery given the collaboration of the Joint Institute for Nuclear Research (Dubna, Russia), Lawrence Livermore and Oak Ridge National Laboratory (USA).

The synthesis of element 118 – also merit JINR and Lawrence Livermore National Laboratory. In this, as in the first two cases, no doubt, no one there. But on the 113-th element of the issue over the controversial, well-known physicists working in Dubna.

In support of their position, they prepared a certificate, which shows the chronology of studies on the synthesis of element 113. The first such isotope (with a mass of 284 and a lifetime of about 1 second) is registered at JINR in 2003, the reaction of calcium-48 with americium 243 – as a daughter product decay of the isotope of element 115 with mass 288.

A little later (in 2004) at the Institute of RIKEN (Japan) Professor Morito group carried out the first experiment irradiation target of bismuth-209 with accelerated ions of zinc-70, which was registered by the isotope of the 113th element with the mass and lifetime of 278 milliseconds. The experiment in RIKEN lasted more than ten years, and have been reported only four events, when “born” a new element.

During the same time at Dubna, there were about a hundred events with element 113, and also carried out pioneering experiments to study of its chemical properties. The fact that the synthesis of 113 isotope with a mass of 284 confirmed colleagues in Germany and the USA. But the experiment of Japanese colleagues, opponents argue, it is unlikely anyone will repeat. Very much it is exotic: to get the millisecond isotope, it is necessary to irradiate the target of several years for a single core. It – unpromising activity.

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“However, the Committee of the IUPAC-IUPAP acknowledged priority of RIKEN. This is somewhat unexpected for us the solution, – says the document, which was received in the” WP “from the Joint Institute for Nuclear Research. – Especially in practice IUPAC ample precedent recognizing the” joint “priority (examples – 103, 104 and 105 members, who gave the opening authorship of JINR Laboratory, Berkeley, USA). We are happy for our colleagues from RIKEN, the more that work manager Professor K. Morita to some extent a pupil of Dubna, where he JINR for quite a long time to learn “the basics” of synthesis of new elements. However, elected scientists RIKEN method for the synthesis of SHE itself completely exhausted, and today they are planning future experiments only on the proposed Dubna method “.

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How to call the new elements of the periodic system DI Mendeleva

According to the regulations, provide its name has the right to the writing team, which was recognized as a priority of discovery. The ratio of the 115 elements of the proposal have already been announced – Muscovy, in honor of the Moscow region, which perform basic research. At 117 th and 118 th elements of the question is still open. “We will discuss it with our colleagues from Livermore and Oak Ridge” – made it clear in Dubna.

Earlier, in 2011, with the collaboration of JINR and Lawrence Livermore National Laboratory (USA) recognized priority in the opening 114 and 116th elements, which are called 114-th element – Flerovium, Fl; 116th – Livermorium, Lv.

Flerova named in honor of the Laboratory of Nuclear Reactions. GN Flerov, who for many years headed by JINR Academician Yuri Hovhannisyan, and the founder of the laboratory – the outstanding Soviet physicist academician GN Flerova (1913-1990).

And in the name of “Livermore” (Livermorium, Lv) immortalized Livermore National Laboratory. Lawrence (California, USA). Livermore scientists for more than twenty years, participates in at Dubna experiments on the synthesis of new elements.

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