Author/Authors :
S. Hofmann and G. Münzenberg، نويسنده , , F.P. Hessberger، نويسنده , , D. Ackermann، نويسنده , , S. Antalic، نويسنده , , P. Cagarda، نويسنده , , B. Kindler، نويسنده , , P. Kuusiniemi، نويسنده , , M. Leino، نويسنده , , B. Lommel، نويسنده , , O.N. Malyshev، نويسنده , , R. Mann، نويسنده , , G. Mu¨nzenberg، نويسنده , , A.G. Popeko، نويسنده , , S. S´aro، نويسنده , , B. Streicher، نويسنده , , A.V. Yeremin، نويسنده ,
Abstract :
The nuclear shell model predicts that the next doubly magic shell-closure beyond208Pb is at a proton number Z = 114, 120, or 126 and at a neutron number N = 172 or 184. The outstanding aim of experimental investigations is the exploration of this region of spherical ‘Super-Heavy Elements’ (SHEs). The measured decay data reveal that for the heaviest elements, the dominant decay mode is α emission, not fission. Decay properties as well as reaction cross-sections are compared with results of theoretical investigations. Finally, plans are presented for the further development of the experimental set-up and the application of new techniques.At a higher sensitivity, the exploration of the region of spherical SHEs now becomes feasible, more than thirty years after its prediction.
