中南民族大学学报（自然科学版）2011，Vol.30Issue(2)：54-60,7.
钠纳米团簇的光吸收和体等离激元:实验结果
Photoabsorption of Nan Clusters and Volume Plasmon: Experimental Results
摘要
Abstract
This study has carried out some experiments on the photoabsorption of Na20 and Na92 covering the near UV part as well as visible range(2.0～5.5 eV) by employing the photodepletion technique.The absorption cross sections for clusters of some other sizes in the near UV range have also been studied.The experimental data for Na20 in the visible part agree with existing data very well.In addition to the strong surface plasmon absorption peaks in the visible,we observed appreciable photoabsorption in the UV region.These cross section spectra have been fitted by Lorentzian line shapes and revealed broad peaks slightly above 4 eV.The frequency and weight of these peaks match the theoretical predictions and are identified as the nanocluster "volume plasmon" resonance.The photoabsorption spectra provide the first experimental observation of optically excited "volume plasmon" collective electronic states in metal nanocluster particles,a phenomenon unique to finite systems.关键词
纳米团簇/体等离激元/表面等离激元/光吸收Key words
nanocluster/volume plasmon/surface plasmon/photoabsorption分类
化学化工引用本文复制引用
夏春雷..钠纳米团簇的光吸收和体等离激元:实验结果[J].中南民族大学学报（自然科学版）,2011,30(2):54-60,7.
