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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Marini, Carlo Karandikar, Amol Aquilanti, Giuliana Kantor, Innokenty Mathon, Olivier Boehler, Reinhard Pascarelli, Sakura Trapananti, Angela |
| Description | Author Affiliation: Aquilanti G ( Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy); Trapananti A ( Operative Group Grenoble (OGG)-Istituto Officina dei Materiali-Consiglio Nazionale delle Ricerche (CNR), 38043 Grenoble Cedex 9, France); Karandikar A ( Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015); Kantor I ( European Synchrotron Radiation Facility, 38043 Grenoble Cedex 9, France.); Marini C ( European Synchrotron Radiation Facility, 38043 Grenoble Cedex 9, France.); Mathon O ( European Synchrotron Radiation Facility, 38043 Grenoble Cedex 9, France.); Pascarelli S ( European Synchrotron Radiation Facility, 38043 Grenoble Cedex 9, France.); Boehler R ( Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015); |
| Abstract | Temperature, thermal history, and dynamics of Earth rely critically on the knowledge of the melting temperature of iron at the pressure conditions of the inner core boundary (ICB) where the geotherm crosses the melting curve. The literature on this subject is overwhelming, and no consensus has been reached, with a very large disagreement of the order of 2,000 K for the ICB temperature. Here we report new data on the melting temperature of iron in a laser-heated diamond anvil cell to 103 GPa obtained by X-ray absorption spectroscopy, a technique rarely used at such conditions. The modifications of the onset of the absorption spectra are used as a reliable melting criterion regardless of the solid phase from which the solid to liquid transition takes place. Our results show a melting temperature of iron in agreement with most previous studies up to 100 GPa, namely of 3,090 K at 103 GPa. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 39 |
| Volume Number | 112 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2015-09-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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