NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
S-process krypton of variable isotopic composition in the Murchison meteoriteData are reported which, for the first time, permit the derivation of the full isotopic spectrum of s-process krypton with reasonable precision. It is shown that this s-Kr in a residue from the Murchison meteorite did not originate in one single s-process but rather is a mixture of contributions from stellar environments where the density of free neutrons was not the same. The astrophysical conditions under which this krypton was produced were distinct from those that have been invoked to explain the solar system s-process abundance. Similar to the C-13-rich carbon component in an aliquot of the same residue, the s-process Kr from different astrophysical sites has retained its identity during the accumulation and subsequent history of the meteorite.
Document ID
19880049866
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Ott, Urlich (Max-Planck-Inst. fuer Chemie Mainz, Germany)
Begemann, Friedrich (Max-Planck-Institut fuer Chemie Mainz, Federal Republic of Germany, United States)
Yang, Yongmann (Max-Planck-Inst. fuer Chemie Mainz, Germany)
Epstein, Samuel (California Institute of Technology Pasadena, United States)
Date Acquired
August 13, 2013
Publication Date
April 21, 1988
Publication Information
Publication: Nature
Volume: 332
ISSN: 0028-0836
Subject Category
LUNAR AND PLANETARY EXPLORATION
Funding Number(s)
CONTRACT_GRANT: NAG9-46
Distribution Limits
Public
Copyright
Other