{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1361137044166184448.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/jb091ib07p07485"}},{"identifier":{"@type":"URI","@value":"http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2FJB091iB07p07485"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2FJB091iB07p07485"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/JB091iB07p07485"}},{"identifier":{"@type":"NAID","@value":"80002931610"}}],"dc:title":[{"@value":"Phase transitions, Grüneisen parameter, and elasticity for shocked iron between 77 GPa and 400 GPa"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>Sound velocities determined in iron, shock compressed to pressures between 77 GPa and 400 GPa, indicate that two phase transitions exist on the Hugoniot. A discontinuity in sound velocities at 200 ± 2 GPa may mark the transition of ε iron to γ iron. A second discontinuity at 243 ± 2 GPa is believed to indicate the onset of melting. The calculated temperature at melting lies between 5000 K and 5700 K. When extrapolated from the Hugoniot melting point, the Lindemann criterion yields an estimate of 5800 ± 500 K for the melting of pure iron at the inner core boundary pressure of 330 GPa. The product of density times the thermodynamic Grüneisen parameter in liquid iron, calculated from the present data, is 19.6 ± 0.8 Mg m<jats:sup>−3</jats:sup>. A temperature profile ranging from 3800 K at the core‐mantle boundary to 5000 K at the earth's center is calculated using the present data. Sound velocities for ε iron provide a better match to seismic velocities for the earth's inner core than do those of γ iron. A comparison between liquid iron velocities and the velocity profile through the outer core provides further evidence for alloying of iron with “lighter elements” in the core.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1381137044166184448","@type":"Researcher","foaf:name":[{"@value":"J. Michael Brown"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137044166184449","@type":"Researcher","foaf:name":[{"@value":"Robert G. McQueen"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"01480227"},{"@type":"PISSN","@value":"http://id.crossref.org/issn/01480227"},{"@type":"PISSN","@value":"https://id.crossref.org/issn/01480227"}],"prism:publicationName":[{"@value":"Journal of Geophysical Research: Solid Earth"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"1986-06-10","prism:volume":"91","prism:number":"B7","prism:startingPage":"7485","prism:endingPage":"7494"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2FJB091iB07p07485"},{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2FJB091iB07p07485"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/JB091iB07p07485"}],"createdAt":"2008-02-06","modifiedAt":"2023-09-22","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050001202892464768","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Sound velocity measurements of hcp Fe-Si alloy at high pressure and high temperature by inelastic X-ray scattering"}]},{"@id":"https://cir.nii.ac.jp/crid/1050850412702413312","@type":"Article","resourceType":"学術雑誌論文(journal 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Equation-of-State Measurements by Laser-Induced Shock Compression: 3.1 High-Pressure Physics Using Laser-Driven Shocks"},{"@language":"ja","@value":"レーザー誘起衝撃波圧縮を用いた状態方程式研究 3. Equation-of-State Measurements by Laser-Induced Shock Compression 3.1 High-Pressure Physics Using Laser-Driven Shocks"},{"@value":"High-Pressure Physics Using Laser-Driven Shocks"},{"@value":"3.1 High-Pressure Physics Using Laser-Driven Shocks(3. 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