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Dissociative Photoionization of 1,2-Epoxyoctane Studied with Synchrotron Radiation
Yang-yang Wang1,2, Ya-wei Liu1,2, Xu Kang1,2, Xiao-li Zhao1,2, Lin Wang1,2, Chuo-zhao Hu1,2, Fu-yi Liu3, Liu-si Sheng3, Lin-fan Zhu1,2
1.Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China;2.Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China;3.National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
Abstract:
Dissociative photoionization of 1,2-epoxyoctane was investigated by synchrotron radiation vacuum ultraviolet photons in the energy region of 9.8-16.6 eV under ultrasonic molec-ular beam. Dissociative fragment ions were measured with reffection time-of-ight mass spectrometer at di erent photon energies. Appearance potentials of the dominative ion fragments were determined through photoionization efficiency curves. The structures and energies of the parent, ionized and neutral radicals were obtained with G3 calculations. Through comparing the experimental results with the theoretical calculations, we proposed the dissociative channels for the photoionization of 1,2-epoxyoctane.
Key words:  1,2-Epoxyoctane  Dissociative photoionization  Appearance potential  Disso-ciation channel
FundProject:
1,2-环氧辛烷的同步辐射光电离解离研究
王洋洋1,2, 刘亚伟1,2, 康旭1,2, 赵小利1,2, 王林1,2, 胡辍招1,2, 刘付轶3, 盛六四3, 朱林繁1,2
1.中国科学技术大学合肥微尺度物质科学国家实验室(筹), 合肥 230026;2.中国科学技术大学量子信息与量子科技前沿协同创新中心, 合肥 230026;3.中国科学技术大学国家同步辐射实验室, 合肥 230029
摘要:
利用同步辐射产生的真空紫外光和反射式飞行时间质谱仪,在超声冷却条件下测量了1,2-环氧辛烷在光子能量9.8~16.6 eV能区的光电离解离过程,获得了不同能量光子作用下的电离解离产物。通过测量各离子的光电离效率曲线,得到了主要碎片离子的出现势。结合G3理论计算得到了母体离子、中性碎片及离子碎片的结构与能量,通过对比实验测量值与理论值给出了1,2-环氧辛烷的光电离解离通道.
关键词:  1,2-环氧辛烷  光电离解离  出现势  解离通道
DOI:10.1063/1674-0068/29/cjcp1603053
分类号: