| A1等离子体与甲醇团簇的反应 |
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| 引用本文： | 张树东,孔祥和,蔡廷东,许明坤. A1等离子体与甲醇团簇的反应[J]. 原子与分子物理学报, 2007, 24(4): 799-804 |
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| 作者姓名： | 张树东 孔祥和 蔡廷东 许明坤 |
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| 作者单位： | 曲阜师范大学物理工程学院,曲阜,273165 |
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| 基金项目： | 曲阜师范大学博士启动基金 |
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| 摘 要： | 利用激光烧蚀-分子束法(LA-MB)对激光烧蚀金属铝靶产生的Al等离子体与脉冲分子束超声膨胀产生的(CH3OH)n团簇在气相条件下的反应进行了研究.烧蚀激光相对于脉冲分子束之间的延时不同,观测到团簇离子序列及团簇尺寸的变化,反映出脉冲分子束状态对反应条件及激光烧蚀等离子体状态的影响.在激光烧蚀发生于脉冲分子束的前段,主要反应产物为Al (CH3OH)n,但团簇尺寸较小;在烧蚀发生于脉冲分子束的中段,主要产物为H (CH3OH)n,团簇尺寸增大,强度减弱;在烧蚀发生于脉冲分子束的后段,观测到尺寸更大的水合质子化团簇H (H2O)m(CH3OH)n.结合团簇离子速度分布的特征,对团簇的产生机理进行了讨论.
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| 关 键 词： | 团簇 反应机理 激光烧蚀 分子束法 A1等离子体 甲醇 飞行时间质谱 |
| 文章编号： | 1000-0364（2007）04-0799-06 |
| 收稿时间： | 2005-12-29 |
| 修稿时间： | 2005-12-29 |
Reactions of aluminum plasma With methanol clusters |
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| ZHANG Shu-dong,KONG Xiang-he,CAI Ting-dong,XU Ming-kun. Reactions of aluminum plasma With methanol clusters[J]. Journal of Atomic and Molecular Physics, 2007, 24(4): 799-804 |
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| Authors: | ZHANG Shu-dong KONG Xiang-he CAI Ting-dong XU Ming-kun |
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| Affiliation: | College of Physics and Engineering, Qufu Normal University, Qufu 273165, China |
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| Abstract: | Laser ablation-molecular beam(LA-MB) is a useful method to study metal ion reacting with molecular clusters.Reactions of aluminum plasma with methanol clusters have been studied.A special designed reaction cell is used as a fast flow reactor operated under thermal condition and the reaction products are measured with time-of-flight (TOF) mass spectrometer.Several series cluster ions such as Al (CH3OH)n,H (CH3OH)n,H (H2O)m(CH3OH)n,and H O(CH3)2(CH3OH)n have been observed when the laser ablating at different part of the molecular beam.The formation mechanisms are discussed combined with cluster ions speeds characteristics. |
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| Keywords: | cluster formation mechanism laser ablation- molecular beam method aluminum plasma methanol cluster time-of-flight mass spectrum |
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