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SIMS chemical and isotopic analysis of impact features from LDEF experiments AO187-1 and AO187-2Previous secondary ion mass spectrometry (SIMS) studies of extended impact features from LDEF capture cell experiment AO187-2 showed that it is possible to distinguish natural and man-made particle impacts based on the chemical composition of projectile residues. The same measurement technique has now been applied to specially prepared gold target impacts from experiment AO187-1 in order to identify the origins of projectiles that left deposits too thin to be analyzed by conventional energy-dispersive x-ray (EDX) spectroscopy. The results indicate that SIMS may be the method of choice for the analysis of impact deposits on a variety of sample surfaces. SIMS was also used to determine the isotopic compositions of impact residues from several natural projectiles. Within the precision of the measurements all analyzed residues show isotopically normal compositions.
Document ID
19950017417
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Stadermann, Frank J.
(Technische Hochschule Darmstadt, Germany)
Amari, Sachiko
(Washington Univ. Saint Louis, MO., United States)
Foote, John
(Washington Univ. Saint Louis, MO., United States)
Swan, Pat
(Washington Univ. Saint Louis, MO., United States)
Walker, Robert M.
(Washington Univ. Saint Louis, MO., United States)
Zinner, Ernst
(Washington Univ. Saint Louis, MO., United States)
Date Acquired
September 6, 2013
Publication Date
February 1, 1995
Publication Information
Publication: NASA. Langley Research Center, LDEF: 69 Months in Space. Third Post-Retrieval Symposium, Part 1
Subject Category
Inorganic And Physical Chemistry
Accession Number
95N23837
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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