| 磷原子簇正负离子的激光产生与质谱分析 |
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| 引用本文： | 黄荣彬,张鹏,李文莹,苏剑瑞,郑兰荪.磷原子簇正负离子的激光产生与质谱分析[J].物理化学学报,1991,7(6):646-647. |
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| 作者姓名： | 黄荣彬 张鹏 李文莹 苏剑瑞 郑兰荪 |
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| 作者单位： | Department of Chemistry, Xiamen University, Xiamen 361005 |
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| 基金项目： | 国家教委优秀青年教师研究基金 |
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| 摘 要： | 原子簇的产生与研究,近年来已成为化学与物理学界兴趣的一个焦点。最近我们在自制的装置上,首次观察到各种大小的磷原子簇,并通过对其正负离子质谱的分析,探讨了其可能的构型。实验装置的原理与详细构造已有另文介绍。本实验选择的激光是Nd:YAG激光器的倍频输出(532nm),聚焦后作用于样品的激光功率密度接近10~7W·cm~(-2)。实验的单质磷样品是多次提纯后的红磷。图1所示的磷原子簇的正负离子质谱由两台飞行时间质谱计同时记录,由连续30次采集的数据平均而成。
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| 关 键 词： | 磷原子簇 激光产生 质谱 |
| 收稿时间： | 1991-06-13 |
| 修稿时间： | 1991-08-08 |
MASS SPECTROMETRY OF LASER GENERATED POSITIVE AND NEGATIVE PHOSPHRUS CLUSTER IONS |
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| Huang Rongbin Zhang Peng Li Wenying Su Jianrui Zheng Lansun.MASS SPECTROMETRY OF LASER GENERATED POSITIVE AND NEGATIVE PHOSPHRUS CLUSTER IONS[J].Acta Physico-Chimica Sinica,1991,7(6):646-647. |
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| Authors: | Huang Rongbin Zhang Peng Li Wenying Su Jianrui Zheng Lansun |
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| Institution: | Department of Chemistry, Xiamen University, Xiamen 361005 |
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| Abstract: | Both positive and negative phosphrus cluster ions were generated on a homemade laser-probe time-of-flight mass spectrometer. P_6~+ has the highest intensity in positive ion mass spectrum, and P_5~- for negative ions. It is proposed that both P_6~+ and P_5~- adopt the planar monocyclic configuration and are aromatic according to Hückel Rule. Further analysis of mass spectra shows that all cluster anions are composed of 5-membered rings and cations arc composed of 6-membered rings. |
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| Keywords: | Phosphrus cluster Laser generation Mass spectrometry |
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