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ISOTOPIC COMPOSITIONS OF BISMUTH, LEAD, THALLIUM, AND MERCURY FROM MINI r ‐PROCESSING
Author(s) -
Heymann Dieter,
Liffman K.
Publication year - 1986
Publication title -
meteoritics
Language(s) - English
Resource type - Journals
eISSN - 1945-5100
pISSN - 0026-1114
DOI - 10.1111/j.1945-5100.1986.tb01228.x
Subject(s) - mercury (programming language) , isotope , thallium , bismuth , radiogenic nuclide , chemistry , explosive material , analytical chemistry (journal) , radiochemistry , mineralogy , environmental chemistry , physics , inorganic chemistry , nuclear physics , organic chemistry , computer science , programming language
The yields of stable isotopes of Bi, Pb, Tl and Hg as well as yields of 205 Pb are calculated with a parameterized model for “mini r‐ processing” in the Ne, O, C‐rich zones of explosive burning in massive stars. The Pb isotopic compositions stand out by their comparatively low 207 Pb yields and by the fact that this r‐ process variant yields 204 Pb quite abundantly. The average 205 Pb/ 204 Pb yield ratio of 6.1 is the same order of magnitude as yield ratios deduced for s‐ processing. The Hg from this mini r‐ process looks like normal solar‐system mercury, but with 196 Hg missing and the light s‐ isotopes A = 198, 199, 200 and 201 depleted (especially the odd‐A species).