Macroscopic Separation of Dense Fluid Phase and Liquid Phase of Phosphorus
Structural transformation between a dense molecular fluid and a polymeric liquid of phosphorus that occurred at about 1 gigapascal and 1000°C was investigated by in situ x-ray radiography. When the low-pressure fluid was compressed, dark and round objects appeared in the radiograph. X-ray diffractio...
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Veröffentlicht in: | Science (American Association for the Advancement of Science) 2004-10, Vol.306 (5697), p.848-851 |
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creator | Katayama, Yoshinori Inamura, Yasuhiro Mizutani, Takeshi Yamakata, Masaaki Utsumi, Wataru Shimomura, Osamu |
description | Structural transformation between a dense molecular fluid and a polymeric liquid of phosphorus that occurred at about 1 gigapascal and 1000°C was investigated by in situ x-ray radiography. When the low-pressure fluid was compressed, dark and round objects appeared in the radiograph. X-ray diffraction measurements confirmed that these objects were the high-pressure liquid. The drops grew and eventually filled the sample space. Decompressing caused the reverse process. The macroscopic phase separation supported the existence of a first-order phase transition between two stable disordered phases besides the liquid-gas transition. X-ray absorption measurements revealed that the change in density at the transition corresponds to about 40% of the density of the high-pressure liquid. |
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When the low-pressure fluid was compressed, dark and round objects appeared in the radiograph. X-ray diffraction measurements confirmed that these objects were the high-pressure liquid. The drops grew and eventually filled the sample space. Decompressing caused the reverse process. The macroscopic phase separation supported the existence of a first-order phase transition between two stable disordered phases besides the liquid-gas transition. X-ray absorption measurements revealed that the change in density at the transition corresponds to about 40% of the density of the high-pressure liquid.</description><identifier>ISSN: 0036-8075</identifier><identifier>EISSN: 1095-9203</identifier><identifier>DOI: 10.1126/science.1102735</identifier><identifier>PMID: 15514151</identifier><identifier>CODEN: SCIEAS</identifier><language>eng</language><publisher>United States: American Association for the Advancement of Science</publisher><subject>Boron ; Chemical properties ; Climate ; Density ; Evidence ; Fluids ; Grade Point Average ; High pressure ; High temperature ; Liquids ; Melting ; Nitrides ; Phase transformations (Statistical physics) ; Phase transitions ; Phase transitions (Physics) ; Phosphorus ; Phosphorus (Chemical element) ; Physics ; Simulation ; Water ; X ray diffraction</subject><ispartof>Science (American Association for the Advancement of Science), 2004-10, Vol.306 (5697), p.848-851</ispartof><rights>Copyright 2004 American Association for the Advancement of Science</rights><rights>COPYRIGHT 2004 American Association for the Advancement of Science</rights><rights>COPYRIGHT 2004 American Association for the Advancement of Science</rights><rights>Copyright American Association for the Advancement of Science Oct 29, 2004</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c688t-1d54184797db8dac8102e5496ec8a2aab69d28777061bb0fe8a7ec8e367cc9633</citedby><cites>FETCH-LOGICAL-c688t-1d54184797db8dac8102e5496ec8a2aab69d28777061bb0fe8a7ec8e367cc9633</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/3839535$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/3839535$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,780,784,803,2884,2885,27924,27925,58017,58250</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/15514151$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Katayama, Yoshinori</creatorcontrib><creatorcontrib>Inamura, Yasuhiro</creatorcontrib><creatorcontrib>Mizutani, Takeshi</creatorcontrib><creatorcontrib>Yamakata, Masaaki</creatorcontrib><creatorcontrib>Utsumi, Wataru</creatorcontrib><creatorcontrib>Shimomura, Osamu</creatorcontrib><title>Macroscopic Separation of Dense Fluid Phase and Liquid Phase of Phosphorus</title><title>Science (American Association for the Advancement of Science)</title><addtitle>Science</addtitle><description>Structural transformation between a dense molecular fluid and a polymeric liquid of phosphorus that occurred at about 1 gigapascal and 1000°C was investigated by in situ x-ray radiography. When the low-pressure fluid was compressed, dark and round objects appeared in the radiograph. X-ray diffraction measurements confirmed that these objects were the high-pressure liquid. The drops grew and eventually filled the sample space. Decompressing caused the reverse process. The macroscopic phase separation supported the existence of a first-order phase transition between two stable disordered phases besides the liquid-gas transition. X-ray absorption measurements revealed that the change in density at the transition corresponds to about 40% of the density of the high-pressure liquid.</description><subject>Boron</subject><subject>Chemical properties</subject><subject>Climate</subject><subject>Density</subject><subject>Evidence</subject><subject>Fluids</subject><subject>Grade Point Average</subject><subject>High pressure</subject><subject>High temperature</subject><subject>Liquids</subject><subject>Melting</subject><subject>Nitrides</subject><subject>Phase transformations (Statistical physics)</subject><subject>Phase transitions</subject><subject>Phase transitions (Physics)</subject><subject>Phosphorus</subject><subject>Phosphorus (Chemical element)</subject><subject>Physics</subject><subject>Simulation</subject><subject>Water</subject><subject>X ray 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a polymeric liquid of phosphorus that occurred at about 1 gigapascal and 1000°C was investigated by in situ x-ray radiography. When the low-pressure fluid was compressed, dark and round objects appeared in the radiograph. X-ray diffraction measurements confirmed that these objects were the high-pressure liquid. The drops grew and eventually filled the sample space. Decompressing caused the reverse process. The macroscopic phase separation supported the existence of a first-order phase transition between two stable disordered phases besides the liquid-gas transition. X-ray absorption measurements revealed that the change in density at the transition corresponds to about 40% of the density of the high-pressure liquid.</abstract><cop>United States</cop><pub>American Association for the Advancement of Science</pub><pmid>15514151</pmid><doi>10.1126/science.1102735</doi><tpages>4</tpages></addata></record> |
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subjects | Boron Chemical properties Climate Density Evidence Fluids Grade Point Average High pressure High temperature Liquids Melting Nitrides Phase transformations (Statistical physics) Phase transitions Phase transitions (Physics) Phosphorus Phosphorus (Chemical element) Physics Simulation Water X ray diffraction |
title | Macroscopic Separation of Dense Fluid Phase and Liquid Phase of Phosphorus |
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