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dc.contributor.authorTorres, Evy Augusto Salcedopt_BR
dc.contributor.authorBarraz Junior, Ney Marçalpt_BR
dc.contributor.authorBarbosa, Marcia Cristina Bernardespt_BR
dc.date.accessioned2020-01-30T04:09:31Zpt_BR
dc.date.issued2013pt_BR
dc.identifier.issn0021-9606pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/205096pt_BR
dc.description.abstractThree core-softened families of potentials are checked for the presence of density and diffusion anomalies. These potentials exhibit a repulsive core with a softening region and at larger distances an attractive well. We found that the region in the pressure-temperature phase diagram in which the anomalies are present increases if the slope between the core-softened scale and the attractive part of the potential decreases. The anomalous region also increases if the range of the core-softened or of the attractive part of the potential decreases. We also show that the presence of the density anomaly is consistent with the non-monotonic changes of the radial distribution function at each one of the two scales when temperature and density are varied. Then, using this anomalous behavior of the structure we show that the pressure and the temperature at which the radial distribution function of one of the two length scales equals the radial distribution function of the other length scales identify the Widom line.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofThe journal of chemical physics. New York. Vol. 138, no. 16 (Apr. 2013), 164502, 10 p.pt_BR
dc.rightsOpen Accessen
dc.subjectDiagramas de fasept_BR
dc.subjectDifusãopt_BR
dc.subjectEstrutura líqüidapt_BR
dc.titleRelation between occupation in the first coordination shells and widom line in core-softened potentialspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000900446pt_BR
dc.type.originEstrangeiropt_BR


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