Have superheavy elements been produced in nature?
Abstract
We discuss the possibility whether superheavy elements can be produced in Nature by the astrophysical rapid neutron capture process. To this end we have performed fully dynamical network rprocess calculations assuming an environment with neutrontoseed ratio large enough to produce superheavy nuclei. Our calculations include two sets of nuclear masses and fission barriers and include all possible fission channels and the associated fission yield distributions. Our calculations produce superheavy nuclei with ensuremath A≈ 300 that however decay on time scales of days.
 Publication:

European Physical Journal A
 Pub Date:
 September 2012
 DOI:
 10.1140/epja/i2012121226
 arXiv:
 arXiv:1207.3432
 Bibcode:
 2012EPJA...48..122P
 Keywords:

 Nuclear Theory
 EPrint:
 12 pages, 11 figures