Neutron investigation of the ion dynamics in liquid mercury: Evidence for collective excitations

被引：50

作者：

Bove, LE ^{[1
]}

Sacchetti, F

Petrillo, C

Dorner, B

Formisano, F

Barocchi, F

机构：

[1] Univ Perugia, INFM, I-06123 Perugia, Italy

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

[3] Politecn Milan, INFM, I-20133 Milan, Italy

[4] Politecn Milan, Dipartimento Fis, I-20133 Milan, Italy

[5] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 09, France

[6] OGG Grenoble, INFM, F-38042 Grenoble 09, France

[7] Univ Florence, INFM, I-50125 Florence, Italy

[8] Univ Florence, Dipartimento Fis, I-50125 Florence, Italy

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.87.215504

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The ion dynamics of liquid mercury was investigated by inelastic neutron scattering. By exploiting an optimized high-resolution (similar to1 meV) experimental configuration, the dynamic response function was accurately measured. Collective excitations extending up to 0.6 Angstrom (-1) were observed with an associated velocity of 2100 +/- 80 m/s. This value is notably greater than the sound velocity, but it is provided by a simple Bohm-Staver calculation. The latter finding emphasizes those electron-related features in the ion dynamics, which are common to systems as different as polyvalent and alkali metals.

引用

页码：215504 / 1

页数：4

共 26 条

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Balucani U., 1994, DYNAMICS LIQUID STAT

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