On the production of nucleides with A > 250 in stellar nucleosynthesis

Details On the production of nucleides with A > 250 in stellar nucleosynthesis On the production of nucleides with A > 250 in stellar nucleosynthesis

Dec 1969

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1969nupha.139..188v&link_type=abstract

Nuclear Physics A, Volume 139, Issue 1, p. 188-202.

Physics

Nuclear Physics

13

Scientific paper

The r-process model of heavy element nucleosynthesis (Seeger, Fowler and Clayton) has been re-examined in order to investigate the possibility that super-heavy elements near the predicted doubly magic nucleus 298114 may have been produced during stellar synthesis. On the basis of current data regarding heavy element fissionability, as well as nucleidic mass systematics, it is concluded the r-process should terminate below mass number A ~ 275. Consequently, heavier elements probably have not been formed naturally. The relationship of these results to the questions of uranium-thorium abundances in nature and the possible role of 254Cf in Type I supernovae is also discussed.
Work supported by the U.S. Atomic Energy Commission.

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