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化学学报
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化学学报 ›› 2004, Vol. 62 ›› Issue (5): 480-484. 上一篇    下一篇

研究论文

激光烧蚀Al~+与乙醇团簇的反应研究

张树东1,2, 牛冬梅1, 张先燚1, 李海洋1   

  1. 1. 中国科学院安徽光学精密机械研究所环境光谱学实验室, 合肥, 230031;
    2. 西北师范大学物理与电子工程学院, 兰州, 730070
  • 投稿日期:2003-03-20 修回日期:2003-11-03 发布日期:2014-02-18
  • 通讯作者: 李海洋,E-mail:hli@aiofm.ac.cn E-mail:hli@aiofm.ac.cn
  • 基金资助:
    国家自然科学基金(No.20073042)、国家863计划(No.2002AA649010)资助项目.

Study on the Reaction of Laser-ablated Aluminum with Ethanol Clusters

ZHANG Shu-Dong1,2, NIU Dong-Mei1, ZHANG Xian-Yi1, LI Hai-Yang1   

  1. 1. Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031;
    2. Physics and Electronic Engineering College, Northwest Normal University, Lanzhou 730070
  • Received:2003-03-20 Revised:2003-11-03 Published:2014-02-18

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利用激光烧蚀-分子束法对Al等离子体与乙醇团簇的反应进行了研究.飞行时间质谱测得的主要反应产物有Al+(C2H5OH)n (n=3～10)与H+(C2H5OH)n (n=1～14)团簇正离子和(C2H5OH)n(H2O)OH- (n=0～8)团簇负离子.实验发现,烧蚀产生的Al等离子体与脉冲分子束的不同位置反应,对团簇离子的类别、大小及强度分布均产生很大影响.Al等离子体与脉冲分子束的前段反应,主要产生金属-复合物团簇离子Al+(C2H5OH)n,且信号较强;Al等离子体与脉冲分子束的中段及后段反应,主要产生质子化团簇离子H+(C2H5OH)n和团簇负离子(C2H5OH)n(H2O)OH-,同时还出现强度较小的其他水合团簇离子,如H+(H2O)m(C2H5OH)n (m=1～2)等.

关键词: 激光烧蚀, 分子束, 离子-团簇反应, 飞行时间质谱

The gas phase reaction of aluminum plasma and ethanol clusters has been studied by laser ablation-molecular beam (LAMB) method with a linear time-of-flight mass spectrometer. A small reaction cell was introduced to the ion-cluster reaction pathway, which can increase the reaction effectively. The metal complex cluster ions Al+(C2H5OH)n (n=3～10) were produced when the Al plasma reacted with the front part of the molecular beam; the protonated ethanol cluster ions H+(C2H5OH)n (n=1～14) and hydrated cluster ions (C2H5OH)n(H2O)OH- (n=0～8) formed mainly when the Al plasma reacted with the middle and back parts of the molecular beam.

Key words: laser ablation, molecular beam, ion-cluster reaction, time-of-flight mass spectrum