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Citation: Liu Fu-Yi, Li Cheng-Xiang, Gao Hui, Sheng Liu-Si, Zhang Yun-Wu. Photoionization of Epichlorohydrin by Synchrotron Radiation[J]. Acta Physico-Chimica Sinica, ;2000, 16(08): 758-763. doi: 10.3866/PKU.WHXB20000817 shu

Photoionization of Epichlorohydrin by Synchrotron Radiation

1.
National Synchrotron Radiation Laboratory,University of Science and Technology of China,Hefei 230026

Received Date: 30 November 1999
Available Online: 15 August 2000

Photoionization and Photodissociation of epichlorohydrin are performed using a time-of-flight mass spectrometer(TOF-MS) with vacuum ultraviolet(VUV) photons from Hefei synchrotron radiation source. Photoionization mass spectrum and photoionization efficiency(PIE) curves of the fragment ions are measured. The appearance potentials of the fragment ions are obtained from their PIE curves. From these data, the formation enthalpies of some ions have been evaluated and their possible channels of dissociative photoionization have been discussed. The experimental results show that the mother ion of epichlorohydrin is unstable and the chlorine atom is easily lost to form ring C_3H_5O+ ion. Other fragment ions come from the dissociation of C_3H_5O+ ions.
- Synchrotron radiation,
- Photoionization,
- Enthalpy,
- Epichlorlhydrin
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沈阳化工大学材料科学与工程学院沈阳 110142

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