Low frequency scattering excess in supercooled confined water

被引：27

作者：

Venturini, F

Gallo, P

Ricci, MA

Bizzarri, AR

Cannistraro, S

机构：

[1] Univ Roma Tre, Ist Nazl Fis Mat, Dipartimento Fis, Unite Ricerca Roma Tre, I-00146 Rome, Italy

[2] Univ Tuscia, Dipartimento Sci Ambientali, Ist Nazl Fis Mat, Unita Ricerca Perugia, I-01100 Viterbo, Italy

来源：

JOURNAL OF CHEMICAL PHYSICS | 2001年 / 114卷 / 22期

关键词：

D O I：

10.1063/1.1367284

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：

Inelastic neutron scattering data on water confined in Vycor glass are presented for temperatures ranging from 268 to 220 K and hydration levels of 12% and 8%. The data have been analyzed in the framework of the mode coupling theory, in the region of the beta relaxation. Strong deviations from the theoretical predictions are found and ascribed to the existence of a low frequency scattering excess. (C) 2001 American Institute of Physics.

引用

页码：10010 / 10014

页数：5

共 36 条

[31] Dynamics of simulated water under pressure [J].

Starr, FW ;

Sciortino, F ;

Stanley, HE .

PHYSICAL REVIEW E, 1999, 60 (06) :6757-6768

[32] Environmental dependence of the dynamics of protein hydration water [J].

Tarek, M ;

Tobias, DJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1999, 121 (41) :9740-9741

[33] Origin of low-frequency local vibrational modes in high density amorphous ice [J].

Tse, JS ;

Klug, DD ;

Tulk, CA ;

Svensson, EC ;

Swainson, I ;

Shpakov, VP ;

Belosludov, VR .

PHYSICAL REVIEW LETTERS, 2000, 85 (15) :3185-3188

[34]

Walrafen G. E., 1972, Water: A Comprehensive Treatise, V1

[35] NEUTRON AND LIGHT-SCATTERING STUDY OF SUPERCOOLED GLYCEROL [J].

WUTTKE, J ;

HERNANDEZ, J ;

LI, G ;

CODDENS, G ;

CUMMINS, HZ ;

FUJARA, F ;

PETRY, W ;

SILLESCU, H .

PHYSICAL REVIEW LETTERS, 1994, 72 (19) :3052-3055

[36] Relaxational dynamics of supercooled water in porous glass [J].

Zanotti, JM ;

Bellissent-Funel, MC ;

Chen, SH .

PHYSICAL REVIEW E, 1999, 59 (03) :3084-3093

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