Formation and stability of small particles of potassium studied by real-time surface differential reflectance

被引：3

作者：

Beitia, C ^{[1
]}

Borensztein, Y ^{[1
]}

机构：

[1] Univ Paris 06, CNRS, URA 781, Lab Opt Solides, F-75252 Paris 05, France

来源：

SURFACE SCIENCE | 1998年 / 402卷 / 1-3期

关键词：

potassium particles; real-time surface differential reflectance; stability;

D O I：

10.1016/S0039-6028(98)00004-1

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：

The growth of K particles on SjO(2) is investigated by real-time surface differential reflectance spectroscopy. The K clusters give rise to a strong optical absorption at 1.6-1.8 eV in the spectra, due to the excitation of a dipolar Mie plasma resonance in the clusters. The difference of this resonance energy with those observed at 1.9-2.12 eV for small free K clusters by photoabsorption experiments is interpreted by the electrostatic interaction between the clusters and the substrate. The stability of the K clusters on the substrate is also studied by following the decrease of the resonance absorption as a function of time. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：445 / 449

页数：5

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