{"@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/1362825893924075264.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1126/science.286.5437.100"}},{"identifier":{"@type":"URI","@value":"https://www.science.org/doi/pdf/10.1126/science.286.5437.100"}}],"dc:title":[{"@value":"Dissociation of CH\n            <sub>4</sub>\n            at High Pressures and Temperatures: Diamond Formation in Giant Planet Interiors?"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>\n            Experiments using laser-heated diamond anvil cells show that methane (CH\n            <jats:sub>4</jats:sub>\n            ) breaks down to form diamond at pressures between 10 and 50 gigapascals and temperatures of about 2000 to 3000 kelvin. Infrared absorption and Raman spectroscopy, along with x-ray diffraction, indicate the presence of polymeric hydrocarbons in addition to the diamond, which is in agreement with theoretical predictions. Dissociation of CH\n            <jats:sub>4</jats:sub>\n            at high pressures and temperatures can influence the energy budgets of planets containing substantial amounts of CH\n            <jats:sub>4</jats:sub>\n            , water, and ammonia, such as Uranus and Neptune.\n          </jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1382825893924075264","@type":"Researcher","foaf:name":[{"@value":"Laura Robin Benedetti"}],"jpcoar:affiliationName":[{"@value":"Department of Physics,"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825893924075269","@type":"Researcher","foaf:name":[{"@value":"Jeffrey H. Nguyen"}],"jpcoar:affiliationName":[{"@value":"H-Division, Physics Directorate, Lawrence Livermore National Laboratory, Livermore, CA 94551, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1382825893924075265","@type":"Researcher","foaf:name":[{"@value":"Wendell A. Caldwell"}],"jpcoar:affiliationName":[{"@value":"Department of Geology and Geophysics,"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825893924075268","@type":"Researcher","foaf:name":[{"@value":"Hongjian Liu"}],"jpcoar:affiliationName":[{"@value":"Department of Geology and Geophysics,"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825893924075267","@type":"Researcher","foaf:name":[{"@value":"Michael Kruger"}],"jpcoar:affiliationName":[{"@value":"Department of Physics, 4747 Troost, Room 227, University of Missouri, Kansas City, MO 64110, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1382825893924075266","@type":"Researcher","foaf:name":[{"@value":"Raymond Jeanloz"}],"jpcoar:affiliationName":[{"@value":"Department of Geology and Geophysics,"},{"@value":"Department of Astronomy and Miller Institute for Basic Research in Science, University of California, Berkeley, CA 94720, USA."}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00368075"},{"@type":"EISSN","@value":"10959203"}],"prism:publicationName":[{"@value":"Science"}],"dc:publisher":[{"@value":"American Association for the Advancement of Science (AAAS)"}],"prism:publicationDate":"1999-10","prism:volume":"286","prism:number":"5437","prism:startingPage":"100","prism:endingPage":"102"},"reviewed":"false","url":[{"@id":"https://www.science.org/doi/pdf/10.1126/science.286.5437.100"}],"createdAt":"2002-07-27","modifiedAt":"2024-01-13","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360004233135418496","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Quantum Chemical Study on the High-Pressure Effect for [4 + 4] Retrocycloaddition of Anthracene Cyclophane Photodimer"}]},{"@id":"https://cir.nii.ac.jp/crid/1360021390560859392","@type":"Article","resourceType":"学術雑誌論文(journal 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