“... A genesis of the elements such as is sketched out would not be confined to our little Solar System, but would probably follow the same general sequence of events in every center of energy now visible as a Star.” Sir William Crookes (1886)
Abstract
We report and discuss solar systemN R abundances for nuclidesA>70, obtained as differences between measured solar system abundances and calculatedS-process contributions. The abundance peak atA≈163 in the rare Earth element region reveals properties which are similar to those of theR-process peaks corresponding to magic neutron numbersN=82 andN=126. We observe that systematic differences in theN R abundances of even-A and odd-A nuclides are restricted to specific mass regions. We discuss possible interpretations and conclude that these differences are most probably related to the properties of nuclear species during β− to the stability valley.
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Paper dedicated to Professor Hannes Alfvén on the occasion of his 80th birthday, 30 May 1988.
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Marti, K., Suess, H.E. The even-odd systematics inR-process nuclide abundances. Astrophys Space Sci 144, 507–517 (1988). https://doi.org/10.1007/BF00793201
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DOI: https://doi.org/10.1007/BF00793201