Momentum-imaging apparatus for the study of dissociative electron attachment dynamics

Moradmand, A.; Williams, J. B.; Landers, A. L.; Fogle, M.
March 2013
Review of Scientific Instruments;Mar2013, Vol. 84 Issue 3, p033104
Academic Journal
An ion-momentum spectrometer is used to study the dissociative dynamics of electron attachment to molecules. A skimmed, supersonic gas jet is crossed with a pulsed beam of low-energy electrons, and the resulting negative ions are extracted toward a time- and position-sensitive detector. Calculations of the momentum in three dimensions may be used to determine the angular dependence of dissociative attachment as well as the energetics of the reaction.


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