| タイトル | In Situ Potassium-Argon Geochronology Using Fluxed Fusion and a Double Spike |
| 本文（外部サイト） | http://hdl.handle.net/2060/20120010464 |
| 著者（英） | Zimmerman, Wayne F.; Farley, Kenneth A.; Rossman, George R.; Sinha, Mahadeva P.; Coleman, Max; Sturhahn, Wolfgang; Neidholdt, Evan L.; McCleese, Daniel J.; Waltenberg, Kathryn; Eiler, John M.; Hurowitz, Joel A.; Hecht, Michael H. |
| 著者所属（英） | California Inst. of Tech. |
| 発行日 | 2012-06-01 |
| 言語 | eng |
| 内容記述 | A document highlights an Li-based fluxing agent that enables sample fusion and quantitative Ar-release at relatively low temperatures (900-1,000 C), readily achievable with current flight resistance furnace designs. A solid, double spike containing known quantities of Ar-39 and K-41 was developed that, when added in known amounts to a sample, enables the extraction of a Ar-40/K-40 ratio for age estimation without a sample mass measurement. The use of a combination of a flux and a double spike as a means of solving the mechanical hurdles to an in situ K-Ar geochronology measurement has never been proposed before. This methodology and instrument design would provide a capability for assessing the ages of rocks and minerals on the surfaces of planets and other rocky terrestrial bodies in the solar system. |
| NASA分類 | Man/System Technology and Life Support |
| レポートNO | NPO-48099 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/263462 |
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