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Chin. Phys. B, 2014, Vol. 23(11): 113404    DOI: 10.1088/1674-1056/23/11/113404
ATOMIC AND MOLECULAR PHYSICS Prev   Next  

Dissociative ionization cross sections of CO2 at electron impact energy of 5 keV

Wang En-Liang (王恩亮), Shen Zhen-Jie (沈镇捷), Yang Hong-Jiang (阳弘江), Tang Ya-Guo (唐亚国), Shan Xu (单旭), Chen Xiang-Jun (陈向军)
Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
Abstract  

The dissociative ionization of CO2 induced by 5 keV electrons in two-body and three-body dissociative channels of CO22+ and CO23+ is identified by the ion-ion coincidence- method using a momentum imaging spectrometer. The partial ionization cross sections (PICSs) of different ionic fragments are measured and the results generally agree with the calculations made by a semi-empirical approach. Furthermore, the PICSs of the dissociative channels are also obtained by carefully considering the detection efficiency of the micro-channel plates and the total transmission efficiency of the time of flight system.

Keywords:  electron collision      partial ionization cross section      dissociative ionization cross section      momentum imaging  
Received:  09 April 2014      Revised:  13 May 2014      Accepted manuscript online: 
PACS:  34.80.Gs (Molecular excitation and ionization)  
  34.80.Ht (Dissociation and dissociative attachment)  
Fund: 

Project supported by the National Basic Research Program of China (Grant No. 2010CB923301), the National Natural Science Foundation of China (Grant Nos. 11327404, 10979007, and 10734040), and the Fundamental Research Funds for the Central Universities, China.

Corresponding Authors:  Wang En-Liang     E-mail:  elwang@ustc.edu.cn

Cite this article: 

Wang En-Liang (王恩亮), Shen Zhen-Jie (沈镇捷), Yang Hong-Jiang (阳弘江), Tang Ya-Guo (唐亚国), Shan Xu (单旭), Chen Xiang-Jun (陈向军) Dissociative ionization cross sections of CO2 at electron impact energy of 5 keV 2014 Chin. Phys. B 23 113404

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