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When electrons meet molecular ions and what happens next: Dissociative recombination from interstellar molecular clouds to internal combustion engines
Stockholm University, Faculty of Science, Department of Physics.
2008 (English)In: Mass spectrometry reviews (Print), ISSN 0277-7037, E-ISSN 1098-2787, Vol. 27, no 5, 485-530 p.Article, review/survey (Refereed) Published
Abstract [en]

The interaction of matter with its environment is the driving force behind the evolution of 99% of the observed matter in the universe. The majority of the visible universe exists in a state of weak ionization, the so called fourth state of matter: plasma. Plasmas are ubiquitous, from those occurring naturally interstellar molecular clouds, cometary comae, circumstellar;shells, to those which are anthropic in origin: flames, combustion engines and fusion reactors. The evolution of these plasmas is driven by the interaction of the plasma constituents, the ions, and the electrons. One of the most important subsets of these reactions is electron-molecular ion recombination. This process is significant for two very important reasons. It is an ionization reducing reaction. removing two ionised species and Producing neutral products. Furthermore, these products may themselves be reactive radical species which can then further drive the evolution of the plasma. The rate at which the electron reacts with the ion depends on many parameters, for examples the collision energy. the internal energy of the ion, and the structure of the ion itself. Measuring these properties together with the manner in which the system breaks up, is therefore critical if the evolution of the environment is to be understood at all. Several techniques have been developed to study just such reactions to obtain the necessary information on the parameters. In this paper the focus will be on one the most recently developed of these, the Ion Storage Ring. together with the detection tools and techniques used to extract the necessary information from the reaction.

Place, publisher, year, edition, pages
2008. Vol. 27, no 5, 485-530 p.
Keyword [en]
storage rings, flowing afterglows, mass spectrometry, dissociative recombination, rates and cross-sections of reaction, reaction products, product excitation, reaction dynamics, imaging
National Category
Physical Sciences
URN: urn:nbn:se:su:diva-58249DOI: 10.1002/mas.20169ISI: 000258614200005OAI: diva2:420122
authorCount :1Available from: 2011-05-31 Created: 2011-05-30 Last updated: 2011-05-31Bibliographically approved

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Thomas, Richard D.
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