| タイトル | Demonstration of Mg-26 excess in Allende and evidence for Al-26 |
| 著者（英） | Lee, T.; Papanastassiou, D. A.; Wasserburg, G. J. |
| 著者所属（英） | California Inst. of Tech. |
| 発行日 | 1976-01-01 |
| 言語 | eng |
| 内容記述 | The observation of a large anomaly in the isotopic composition of Mg in a Ca-Al rich chondrule from the Allende meteorite is discussed. A strong correlation is found in this chondrule between the Mg-26 excess and the Al/Mg ratio. The most plausible cause of the anomaly is attributed to the in situ decay of now extinct Al-26. However, the general pattern of Mg isotopic anomalies is not yet shown to be fully consistent with the Al-26 hypothesis, since an apparently negative Mg-26 anomaly is obtained which cannot be explained by Al-26. A large natural fractionation effect is observed for Mg isotopes. The resolution of the O anomaly and its relation with Mg effects require further investigation. |
| NASA分類 | LUNAR AND PLANETARY EXPLORATION |
| レポートNO | 76A19621 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/444361 |
