Superheavy Element Research Superheavy Element Research
Superheavy Element Research Superheavy Element Research
Superheavy Element Research Superheavy Element Research
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Potential<br />
ene ergy / MMeV<br />
Influence of shell effects on fission barrier<br />
LD + shell<br />
no barrier!<br />
Cf<br />
250 50<br />
98 152<br />
LD 250 25098 98152<br />
SSg<br />
268 268106162 106 162<br />
298 114184<br />
298<br />
114 114184<br />
macroscopic barrier:<br />
Disappears at Z ~ 104!<br />
with shell structure:<br />
spherical � deformed ground state<br />
fi fission i bbarrier i iis also l > 0 ffor<br />
elements with Z �104.<br />
some fission barriers have<br />
complicated shapes, multiplyhumped<br />
elements that exist only thanks<br />
to shell effects:<br />
superheavy elements<br />
Deformation β2 after A. Sobiczewski / S. Hofmann<br />
Ch.E. Düllmann – <strong>Superheavy</strong> element research – FIAS Colloquium – Frankfurt Institute for Advanced Studies, Frankfurt – October 20, 2011
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