CRCU

Chemical Research in Chinese Universities ›› 2006, Vol. 22 ›› Issue (3): 375-378.

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UV Photoionization Study of the Ethyl Radical

WANG Jing1, WEI Li-xia1, YANG Bin1, YANG Rui1, HUANG Chao-qun1, SHAN Xiao-bin1, SHENG Liu-si1, ZHANG Yun-wu1, QI Fei1, YAO Chun-de2, LI Qi2, JI Qing2   

  1. 1. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P. R. China;
    2. State Key Laboratory of Engines, Tianjin University, Tianjin 300072, P. R. China
  • Received:2005-04-21 Online:2006-06-24 Published:2011-08-06
  • Supported by:

    Supported by the "Knowledge Innovation" Funding of CAS and the National Natural Science Foundation of China (No.20473081).

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Abstract: The ethyl radical was observed in a low-preasure premixed gasoline/oxygen/argon flame by using tunable vacuum ultraviolet photoionization mass spectrometry. The ionization energy(IE) of the ethyl radical was derived to be(8. 24± 0. 02) eV from the photoionization efficiency curve. In addition, a high-level ab initio Gaussian-3 (G3) method was used to calculate the energies of the radical and its cation. The calculated adiabatic ionization potential is 8. 17eV, which is in good agreement with the experimental value.

Key words: Ethyl radical, Photoionization efficiency spectra, Ionization energy