Issue 32, 2010

Integral and differential cross sections of reactions relevant to astrochemistry

Abstract

In recent years, kinetic experiments have shown that, contrary to the Arrhenius concept, many neutral–neutral reactions remain fast at very low temperature. Such behaviour ranks them as important processes to be considered in the chemical networks that model the synthesis and the fate of molecules observed in the interstellar medium. This Perspective Article aims to review complementary crossed beam experiments of relevant neutral–neutral reactions performed in the low collision energy regime. A few selected reactions are considered, with particular emphasis on carbon-atom reactions with unsaturated hydrocarbons. It is shown, with the example of the C + C2H2 system, that the conjunction of kinetic and dynamic experiments can provide a consistent set of detailed rate coefficients for a multichannel reaction, relevant to astrochemical models.

Graphical abstract: Integral and differential cross sections of reactions relevant to astrochemistry

Article information

Article type
Perspective
Submitted
26 Feb 2010
Accepted
26 Apr 2010
First published
28 Jun 2010

Phys. Chem. Chem. Phys., 2010,12, 9154-9164

Integral and differential cross sections of reactions relevant to astrochemistry

M. Costes and C. Naulin, Phys. Chem. Chem. Phys., 2010, 12, 9154 DOI: 10.1039/C003656K

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