Picosecond dynamics of gas-phase dimers in liquid carbon dioxide

被引：4

作者：

Guarini, E. ^{[1
,6
]}

Sampoli, M. ^{[2
,6
]}

Bafile, U. ^{[3
]}

Formisano, F. ^{[4
,6
]}

Jimenez-Ruiz, M. ^{[4
]}

Orecchini, A. ^{[5
,6
]}

Venturi, G. ^{[1
,6
]}

Barocchi, F. ^{[1
,6
]}

机构：

[1] Univ Firenze, Dipartimento Fis, I-50019 Sesto Fiorentino, Italy

[2] Univ Florence, Dipartimento Energet, I-50139 Florence, Italy

[3] CNR, Ist Sistemi Complessi, I-50019 Sesto Fiorentino, Italy

[4] Inst Laue Langevin, F-38042 Grenoble, France

[5] Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy

[6] Univ Roma La Sapienza, Dipartimento Fis, CNR, INFM,CRS Soft, I-00185 Rome, Italy

来源：

CHEMICAL PHYSICS LETTERS | 2008年 / 464卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2008.09.036

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An inelastic neutron scattering and molecular dynamics simulation study of the interaction properties of liquid CO2 is reported. By means of an interaction-based interpretation of neutron scattering and simulation results for the dynamic structure factor we also show that (CO2)(2) equilibrium dimers characteristic of the gas phase are present in dense liquid carbon dioxide and predominantly contribute to the observed picosecond dynamics. Such a memory of the gas-phase structures was not observed in liquid methane. The role of anisotropy and strength of interactions on these important differences is discussed. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：177 / 180

页数：4

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