| An Effective Method of Producing Small Neutral Carbon Clusters |
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| 作者姓名： | 夏柱红 陈正竹 许艳珠 |
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| 作者单位： | [1]Department of Physics, Southeast University, Nanjing 211189 [2]Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei |
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| 基金项目： | Support by the National Natural Science Foundation of China under Grant No 29973039, Department of Education of Jiangsu Province （No JHB05-04）, and Southeast University （No XJ0510195）. |
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| 摘 要： | An effective method of producing small neutral carbon dusters Cn （n = 1-6） is described. The small carbon dusters （positive or negative charge or neutral） are formed by plasma which are produced by a high power 532nm pulse laser ablating the surface of the metal Mn rod to react with small hydrocarbons supplied by a pulse valve, then the neutral carbon clusters are extracted and photo-ionized by another laser （266nm or 355nm） in the ionization region of a linear time-of-flight mass spectrometer. The distributions of the initial neutral carbon dusters are analysed with the ionic species appeared in mass spectra. It is observed that the yield of small carbon dusters with the present method is about 10 times than that of the traditional widely used technology of laser vaporization of graphite.
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| 关 键 词： | 中性碳 线束 物理实验 实验研究 |
| 收稿时间： | 2007-4-4 |
| 修稿时间： | 2007-04-04 |
An Effective Method of Producing Small Neutral Carbon Clusters |
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| XIA Zhu-Hong,CHEN Cheng-Chu,HSU Yen-Chu.An Effective Method of Producing Small Neutral Carbon Clusters[J].Chinese Physics Letters,2007,24(7):1912-1914. |
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| Authors: | XIA Zhu-Hong CHEN Cheng-Chu HSU Yen-Chu |
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| Institution: | Department of Physics, Southeast University, Nanjing 211189Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei |
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| Abstract: | An effective method of producing small neutral carbon clusters Cn(n=1--6) is described. The small carbon clusters (positive or negative charge or neutral) are formed by plasma which are produced by a high power 532nm pulse laser ablating the surface of the metal Mn rod to react with small hydrocarbons supplied by a pulse valve, then the neutral carbon clusters are extracted and photo-ionized by another laser (266nm or 355nm) in the ionization region of a linear time-of-flight mass spectrometer. The distributions of the initial neutral carbon clusters are analysed with the ionic species appeared in mass spectra. It is observed that the yield of small carbon clusters with the present method is about 10 times than that of the traditional widely used technology of laser vaporization of graphite. |
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| Keywords: | 36 40 -c 39 90 +d 33 15 Ta |
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