Collision Theory: Basic Explanation for Collisions in Mass Spectrometry



Recent developments in mass spectrometry have had far-reaching effects not only on physical and chemical studies of gaseous molecules and ions but also on biological studies, including proteomics and metabolomics. In mass spectrometry, collisions are very important elementary processes in ionization, collision-induced dissociation, and mobility, whose methods are useful for the development of proteomics and metabolomics. In this chapter, to understand the basis of collision, the concepts of center-of-mass system, laboratory system, cross section, kinetic energy release, and impact parameter are explained. The cross sections, which provide the magnitude of elementary reactions, depend on reaction species, collision energies, and reaction processes. I present these dependences with the support of various examples.


Collision Energy Impact Parameter Differential Cross Section Reaction Cross Section Ionization Cross Section 
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© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.Department of Chemistry, Graduate School of ScienceOsaka Prefecture UniversityOsakaJapan

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