Investigations of dissociative photoionization of isooctance by synchrotron radiation

被引：1
|
作者：
Wang, Y. Y. [1 ,2 ]
Kang, X. [1 ,2 ]
Liu, Y. W. [1 ,2 ]
Xu, W. Q. [1 ,2 ]
Wang, L. [1 ,2 ]
Hu, C. Z. [1 ,2 ]
Chen, J. [3 ]
Liu, F. Y. [3 ]
Sheng, L. S. [3 ]
Zhao, X. L. [1 ,2 ]
Zhang, P. F. [2 ]
Zhu, L. F. [1 ,2 ]
机构：
[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscal, Hefei 230026, Anhui, Peoples R China
[2] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China
[3] Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230026, Anhui, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY | 2014年 / 359卷
基金：
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词：
Isooctane; Dissociative photoionization; Appearance potential; Dissociation channel; Dissociation energy; Formation enthalpy; ENERGY-LEVELS; SPECTROSCOPY; SPECTRUM;
D O I：
10.1016/j.ijms.2013.12.023
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
Using vacuum ultraviole photons produced by synchrotron radiation and reflection time-of-flight mass spectrometer, dissociative photoionization of isooctane was measured in the photon energy region of 9.7-15.6 ev under ultrasonic molecular beam. Then the dissociative ionization products at different photon energies were obtained. By measuring the photoionization efficiency curves, the appearance potentials of the dominative ion fragments and the vertical ionization energy of isooctane were determined. In addition, combining with G3 calculations we obtained the structure and energy of the parent, neutral and ion fragments. By comparing the experimental measurements with the theoretical calculation, the dissociative photoionization channels of isooctane were elucidated, and formation enthalpies of the fragmented ions and the dissociation energy of the parent ion were obtained. (C) 2013 Elsevier B.V. All rights reserved.
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页码：1 / 5
页数：5
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