਍ഀ ਍ഀ ਍ഀ ਍ഀ ਍ഀ ਍ഀ ਍ഀ ਍ഀ ਍ഀ ਍ഀ ਍ഀ ਍ഀ ਍ഀ Preface:Research Group for Superheavy Elements / Advanced Science Research Center / JAEA਍ഀ ਍ഀ ਍ഀ ਍ഀ ਍ഀ ਍ഀ
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Preface

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Uunderstanding chemical and nuclear properties of superheavy elements.


਍ഀ Discovering new elements and clarifying their unknown chemical and physical properties are most interesting
਍ഀ and challenging subjects in both chemistry and physics.

਍ഀ How many chemical elements can exist and can be produced? How long can they live?
਍ഀ Which properties determine their stability? What are their chemical and physical properties?
਍ഀ How well do their chemical properties follow the Periodic Table?
਍ഀ And how are their orbital electron configurations affected by increasingly strong relativistic effects?

਍ഀ These are some of the most fundamental questions in science.
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਍ഀ ਍ഀ The main objective of this group is to understand chemical and nuclear properties of superheavy elements (SHEs)਍ഀ placed at the uppermost end of the Periodic Table and on the heaviest frontier of the nuclear chart.

਍ഀ Because of the short half-lives and the low production rate of SHEs,
਍ഀ each atom produced decays before a new atom is synthesized.
਍ഀ This means that any experiments to be performed must be done on an "atom-at-a-time" basis.

਍ഀ ਍ഀ Thus, rapid, very efficient and selective experimental procedures are indispensable to isolate the desired properties.
਍ഀ We focus on the valence electronic structure of SHEs that is experimentally determined from their ionic radii,
਍ഀ redox potentials, ionization potentials and compound formations.

਍ഀ ਍ഀ To elucidate the limits of stability of superheavy nuclei (SHN),
਍ഀ the shell structure of SHN is investigated through proton and neutron single-particle structures
਍ഀ and through the evolution of nuclear deformation at the highest proton and neutron numbers.

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਍ഀ Copyright(C):Advanced Research Center, JAEA All rights reserved.
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