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题名: Effects of kinetic energy and collision gas on measurement of cross sections by Fourier transform ion cyclotron resonance mass spectrometry
作者: Yang, Fan1, 2;  Jones, Chad A.1;  Dearden, David V.1
关键词: Collision cross section ;  Calibration ;  Kinetic energy ;  Fourier transform ion cyclotron resonance mass spectrometry
刊名: INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
发表日期: 2015-02-15
DOI: 10.1016/j.ijms.2014.07.026
卷: 378, 页:143-150
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Physics, Atomic, Molecular & Chemical ;  Spectroscopy
研究领域[WOS]: Physics ;  Spectroscopy
英文摘要: Cross sections for removal of ions, under pressure-limited conditions, from the coherently orbiting ion packet in a Fourier transform ion cyclotron resonance (FTICR) mass spectrometer can be measured by analysis of the FTICR line width as a function of collision gas pressure. We show that the FTICR pressure-limited line width is proportional to the square root of the collision kinetic energy (i.e., directly proportional to the ion velocity) in the center-of-mass reference frame. Cross sections increase with kinetic energy until they approach a high-energy limit, suggesting that collision-induced dissociation contributes significantly to ion dephasing. As the collision gas is varied, the cross sections are inversely proportional to the reduced mass of the collision system, and are also weakly sensitive to the physical size of the neutral collision gas. We show that N-2, Ar, and SF6 are all suitable collision gases for these experiments. Analytical discrimination (the ability to detect small differences in cross sections) is greatest for the lighter collision gases, but the ease of reaching high kinetic energies in the center-of-mass reference frame increases with collision gas mass. Under the conditions of our instrument and experiments, Ar is the preferred collision gas. (C) 2014 Elsevier B.V. All rights reserved.
关键词[WOS]: MOBILITY SPECTROMETRY ;  INDUCED DISSOCIATION ;  PHASE CONFORMATIONS ;  CLUSTERS ;  FAIMS ;  SPECTROSCOPY
语种: 英语
WOS记录号: WOS:000353095000017
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146191
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Brigham Young Univ, Dept Chem & Biochem, Provo, UT 84602 USA
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Yang, Fan,Jones, Chad A.,Dearden, David V.. Effects of kinetic energy and collision gas on measurement of cross sections by Fourier transform ion cyclotron resonance mass spectrometry[J]. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY,2015,378:143-150.
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