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

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Mikosch,  J.
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Schwalm,  D.
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Weidemüller,  M.
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Wester,  R.
Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Citation

Mikosch, J., Frühling, U., Trippel, S., Schwalm, D., Weidemüller, M., & Wester, R. (2006). Velocity map imaging of ion-molecule reactive scattering: The Ar+ and N2 charge transfer reaction. Physical Chemistry Chemical Physics, 8, 2990-2999.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0011-86ED-D
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.