The cosmic ray abundances of the platinum-lead elements as measured on HEAO-3The relative abundances of elements in the charge ranges of Z = 75-79 (platinum) and Z = 80-83 (lead) should be a sensitive indication of the contributions of the r- and s-processes in nucleosynthesis. Data from the HEAO 3 Heavy Nuclei Experiment are used to establish abundances, relative to iron, of these elements in the cosmic radiation, as well as the ratio of 'secondary' elements, in the Z = 62-74 range, to the primary lead-platinum elements. These results appear to suggest that either the source abundances are deficient in s-process elements or that they are not organized solely by first ionization potential. In addition, present propagation models can adequately represent the relative abundances of primary and secondary elements.
Document ID
19850040832
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Fixsen, D. J. (Minnesota Univ. Minneapolis, MN, United States)
Waddington, C. J. (Minnesota, University Minneapolis, MN, United States)
Binns, W. R. (Minnesota Univ. Minneapolis, MN, United States)
Israel, M. H. (Minnesota Univ. Minneapolis, MN, United States)
Klarmann, J. (Washington University St. Louis, MO, United States)
Garrard, T. L. (Minnesota Univ. Minneapolis, MN, United States)
Newport, B. J. (Minnesota Univ. Minneapolis, MN, United States)
Stone, E. C. (California Institute of Technology Pasadena, CA, United States)