Identification of silicate and carbonaceous presolar grains by SIMS in the type-3 enstatite chondrite ALHA81189

Ebata, Shingo; Fagan, Timothy J.; Yurimoto, Hisayoshi

Identification of silicate and carbonaceous presolar grains by SIMS in the type-3 enstatite chondrite ALHA81189

Ebata, Shingo; Fagan, Timothy J.; Yurimoto, Hisayoshi

Applied Surface Science, 2008, 255(4), 1468-1471

Permalink : https://hdl.handle.net/2115/38755

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アクセス権	open access
URI	https://hdl.handle.net/2115/38755
タイトル	Identification of silicate and carbonaceous presolar grains by SIMS in the type-3 enstatite chondrite ALHA81189
著者	Ebata, Shingo ; Fagan, Timothy J. ; Yurimoto, Hisayoshi
著者名 Ebata, Shingo
著者名 Fagan, Timothy J.
著者名 Yurimoto, Hisayoshi
言語	英語
キーワード	Isotope microscope
	SIMS
	Imaging
	Isotope ratio
	Presolar grain
	Meteorite
発行日	2008-12-15
出版者	Elsevier B.V.
収録物名	Applied Surface Science
巻(号)	255(4)
ページ	1468-1471
抄録	An isotope ratio imaging technique using the HokuDai isotope microscope system has been applied to in-situ survey for presolar grains in the type-3 enstatite chondrite ALHA81189. Rastered and static ion beam were used for primary beam. Lateral resolution of the isotope image was achieved to be 0.4 μm for static ion beam mode and to be 0.6 μm for rastered ion beam mode. As a result, the abundances of presolar grains are 150 to 200% larger under the static ion beam mode than under the rastered ion beam mode. Development of image processing introducing isotopography of 32S-, 24Mg16O- and 56Fe- succeeded to increase efficiency of presolar grain characterization. Using the static ion beam and introducing appropriate isotopography were very useful methods of in-situ characterization of presolar grains in meteorites.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
PISSN	0169-4332
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.apsusc.2008.05.048