引用本文:
【打印本页】   【HTML】   【下载PDF全文】   View/Add Comment  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 943次   下载 1123 本文二维码信息
码上扫一扫!
分享到: 微信 更多
Reaction of Laser-ablated Ni Plasma with Methanol Clusters
Niu Dongmei,Zhang Shudong,Zhang Xianyi,Li Haiyang*
Author NameAffiliationE-mail
Niu Dongmei Laboratory of Environmental SpectroscopyAnhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031  
Zhang Shudong Laboratory of Environmental SpectroscopyAnhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031  
Zhang Xianyi Laboratory of Environmental SpectroscopyAnhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031  
Li Haiyang* Laboratory of Environmental SpectroscopyAnhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031 hli@aiofm.ac.cn 
Abstract:
The gas phase reaction of Ni plasma and methanol clusters is studied by the laser ablation-molecular beam(LAMB) method. Five species of clustered complex ions Ni+(CH3OH)n,NiO+(CH3OH)n,H+(CH3OH)n,H3O+(CH3OH)n,CH3O-(CH3OH)n(n≤25)are observed. Interestingly,the species and sizes of the product clusters vary observably when the plasma acts on the different parts of the pulsed methanol molecular beam. When the laser ablated Ni plasma acts on the head and tail of the beam,the metal methanol complex clusters Ni+(CH3OH)n and the oxidation clusters NiO+(CH3OH)n(n=1-15)together with protonated methanol clusters H +(CH3OH)n are domain. While the plasma acts on the middle of the beam,however,Ni+(CH3OH)1-2 and H+(CH3OH)n along with the mixed methanol-water clusters H3O+(CH3OH)n(n=15-25)turn to be the main resulting clusters. By comparing the intensities and the cluster sizes of NiO+(CH3OH)n with Ni+(CH3OH)n,the formation of NiO+(CH3OH)n is contributed to the intracluster demethanation reaction of Ni+(CH3OH)n and evaporation of several methanol molecules. As the H3O+(CH3OH)n is observed only when the plasma acts on the high density part of the beam,and their intensities are only 0. 5% of the protonated methanol molecule,it is concluded that the species are partially due to the recombination of H+(CH3OH)n and water,which come from the plasma-molecule reaction.
Key words:  Ni plasma,Methanol clusters,Time-of-flight mass spectrum,Laser ablation
FundProject:
激光溅射Ni等离子体与气相CH3OH团簇的反应
牛冬梅,张树东,张先燚,李海洋*
摘要:
用激光溅射-分子束技术研究了气相中Ni的等离子体与甲醇分子团簇的反应. 观察到Ni(CH3OH)n、NiO+CH3OH)n、H+CH3OH)n、H3O+(CH3OH)n四个种类的团簇正离子和CH3O-(CH3OH)n(n≤25)一种团簇负离子. 详细考察了激光烧蚀等离子体作用于脉冲分子束的不同位置时,对团簇产物种类和团簇尺寸大小的影响. 发现NiO+(CH3OH)n是由Ni+CH3OH)n团簇内的脱甲烷反应生成的,而H +(CH3OH)n、H3O+(CH3OH)n主要是激光等离子体中的电子与甲醇团簇碰撞电离产生的.
关键词:  激光溅射  Ni 等离子体  甲醇团簇  飞行时间质谱
DOI:10.1088/1674-0068/17/2/116-120
分类号: