1,2-环氧丙烷的光电离解离通道与机理  

Photoionization/Dissociation Channels and Mechanism of 1,2-Propylene Oxide

作　　者：刘付轶[1] 盛六四[1] 齐飞[1] 武国华[1] 高辉[1] 周卫东[1] 张允武[1] 

机构地区：[1]中国科学技术大学国家同步辐射实验室,合肥230026

出　　处：《物理化学学报》1999年第9期845-849,共5页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金资助项目!(29673037)

摘　　要：Photoionization/dissociation of 1,2 propylene oxide are performed by using a time of flight mass spectrometer(TOF MS) with vacuum ultraviolet photons from Hefei synchrotron radiation source. The photoionization TOF mass spectrum and photoionization efficiency(PIE) curves of fragment ions are measured.The appearance potentials(AP) of these ions are obtained from their PIE curves. From these data, the formation enthalpies of the observed ions have been evaluated, and their possible channels have been analyzed. The mechanism of dissociative photoionization of 1,2 propylene oxide has been discussed.Photoionization/dissociation of 1,2 propylene oxide are performed by using a time of flight mass spectrometer(TOF MS) with vacuum ultraviolet photons from Hefei synchrotron radiation source. The photoionization TOF mass spectrum and photoionization efficiency(PIE) curves of fragment ions are measured.The appearance potentials(AP) of these ions are obtained from their PIE curves. From these data, the formation enthalpies of the observed ions have been evaluated, and their possible channels have been analyzed. The mechanism of dissociative photoionization of 1,2 propylene oxide has been discussed.

关 键 词：1 2-环氧丙烷 光电离 出现势 解离通道与机理 

分 类 号：O626[理学—有机化学]