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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
Peer-reviewed Journal Articles, etc >
Identification of silicate and carbonaceous presolar grains by SIMS in the type-3 enstatite chondrite ALHA81189
| Title: | Identification of silicate and carbonaceous presolar grains by SIMS in the type-3 enstatite chondrite ALHA81189 |
| Authors: | Ebata, Shingo Browse this author | | Fagan, Timothy J. Browse this author | | Yurimoto, Hisayoshi Browse this author |
| Keywords: | Isotope microscope | | SIMS | | Imaging | | Isotope ratio | | Presolar grain | | Meteorite |
| Issue Date: | 15-Dec-2008 |
| Publisher: | Elsevier B.V. |
| Journal Title: | Applied Surface Science |
| Volume: | 255 |
| Issue: | 4 |
| Start Page: | 1468 |
| End Page: | 1471 |
| Publisher DOI: | 10.1016/j.apsusc.2008.05.048 |
| Abstract: | 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. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/38755 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 江端 新吾
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