Rotational dynamics of hydration water in dicalcium silicate by quasielastic neutron scattering

被引：39

作者：

Faraone, A ^{[1
]}

Chen, SH

Fratini, E

Baglioni, P

Liu, L

Brown, C

机构：

[1] MIT, Dept Nucl Engn, Cambridge, MA 02139 USA

[2] Univ Messina, Dept Phys, I-98121 Messina, Italy

[3] Univ Messina, INFM, I-98121 Messina, Italy

[4] Univ Florence, Dept Chem, I-50019 Florence, Italy

[5] Univ Florence, CSGI, I-50019 Florence, Italy

[6] Univ Maryland, Dept Mat & Nucl Engn, College Pk, MD 20742 USA

[7] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA

来源：

PHYSICAL REVIEW E | 2002年 / 65卷 / 04期

关键词：

D O I：

10.1103/PhysRevE.65.040501

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Quasielastic neutron scattering (QENS) has been used to investigate the single-particle dynamics of interfacial water in dicalcium silicate (C2S)/water paste. Our previous neutron-scattering studies on interfacial water have focused attention on the translational dynamics of the center of mass of water molecules. In this paper, we have collected QENS data on a wider range of wave-vector transfer so that both translational and rotational motions of water molecules are detected. The data have been analyzed by models for translation and rotation we recently proposed for supercooled water. The evolution of the parameters describing the relaxational dynamics of water embedded in the C2S matrix is given at temperature T=303 K as a function of the curing time.

引用

页数：4

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