物理化学学报 >> 1990, Vol. 6 >> Issue (03): 257-258.doi: 10.3866/PKU.WHXB19900301

通讯    下一篇

激光产生的碳原子簇负离子及其质谱研究

李文莹; 黄荣彬; 庄马展; 丁少平; 郑兰荪   

  1. 厦门大学化学系
  • 收稿日期:1990-01-03 修回日期:1990-02-06 发布日期:1990-06-15
  • 通讯作者: 郑兰荪

Mass Spectrometry of Laser Generated Negative Carbon Cluster Ions

Li Wen-Ying; Huang Rong-Bin; Zhuang Ma-Zhan; Ding Shao-Ping; Zheng Lan-Sun   

  1. Chemistry Department, Xiamen University
  • Received:1990-01-03 Revised:1990-02-06 Published:1990-06-15
  • Contact: Zheng Lan-Sun

Abstract: Negative carbon cluster ions were generated on a conventionally made laser probe time-of-flight mass spectrometer. The mass spectra showed an even/odd alternation of the cluster ion intensities with cluster size up to 12, indicating a chain configuration. For cluster anions larger than 12, the ions containing 4m+1 carbon atoms have higher concentrations in the cluster anion beam, and a cyclic model can explain the observation very well. We therefore conclude that the chain-ring transi-tion occurs at n=12.