物理化学学报 >> 1996, Vol. 12 >> Issue (02): 185-189.doi: 10.3866/PKU.WHXB19960220

研究简报 上一篇    下一篇

铜氧团簇负离子的产生

马晨生, 李海洋, 张晓光, 白吉玲, 王秀岩, 张桂秋, 王利, 何国钟, 楼南泉   

  1. 中国科学院大连化学物理研究所,分子反应动力学国家重点实验室,大连 116023
  • 收稿日期:1995-03-22 修回日期:1995-08-15 发布日期:1996-02-15
  • 通讯作者: 马晨生

Production of Copper Oxide Negative Cluster Ions

Ma Chen-Sheng, Li Hai-Yang, Zhang Xiao-Guang, Bai Ji-Ling, Wang Xiu-Yan, Zhang Gui-Qiu, Wang Li, He Guo-Zhong, Lou Nan-Quan   

  1. State Key Laboratory of Molecular Reaction Dynamics,Dalian Institute of Chemical Physics,Academia Sinica,Dalian 116023
  • Received:1995-03-22 Revised:1995-08-15 Published:1996-02-15
  • Contact: Ma Chen-Sheng

关键词: 团簇, 激光烧蚀, 碰撞稳定化作用, 铜氧团簇负离子

Abstract:

Copper oxide cluster ions CunOm n=1-22, m=1-12 are generated by 523 nm laser ablation of CuCO3 solid sample with Time of Flight Mass Spectrometer detection. By changing precursor, we get similar TOF MS from Cu(NO3)2 sample, but narrower mass distribution from CuO sample. We suggest that this is caused by collisionally stabilization. Small gas molecules CO2 and NO2, generated by laser ablation of CuCO3 and Cu(NO3)2, act as buffer gas in supersonic molecular beams, and they are helpful for the production of high mass clusters.

Key words: Cluster, Laser ablation, Collsionally stabilization, Copper oxide