Issue 25, 2006

Velocity map imaging of ion–molecule reactive scattering: The Ar+ + N2 charge transfer reaction

Abstract

We present a velocity map imaging spectrometer for the study of crossed-beam reactive collisions between ions and neutrals at (sub-)electronvolt collision energies. The charge transfer reaction of Ar+ with N2 is studied at 0.6, 0.8 and 2.5 eV relative collision energies. Energy and angular distributions are measured for the reaction product N+2. The differential cross section, as analyzed with a Monte Carlo reconstruction algorithm, shows significant large angle scattering for lower collision energies in qualitative agreement with previous experiments. Significant vibrational excitation of N+2 is also observed. This theoretically still unexplained feature indicates the presence of a low energy scattering resonance.

Graphical abstract: Velocity map imaging of ion–molecule reactive scattering: The Ar+ + N2 charge transfer reaction

Article information

Article type
Paper
Submitted
01 Mar 2006
Accepted
30 Mar 2006
First published
20 Apr 2006

Phys. Chem. Chem. Phys., 2006,8, 2990-2999

Velocity map imaging of ion–molecule reactive scattering: The Ar+ + N2 charge transfer reaction

J. Mikosch, U. Frühling, S. Trippel, D. Schwalm, M. Weidemüller and R. Wester, Phys. Chem. Chem. Phys., 2006, 8, 2990 DOI: 10.1039/B603109A

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