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          Institute: MPI für Kernphysik     Collection: Physics of Cold Molecular Ions and Ultra-Cold Ensembles     Display Documents



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ID: 281893.0, MPI für Kernphysik / Physics of Cold Molecular Ions and Ultra-Cold Ensembles
Velocity map imaging of ion-molecule reactive scattering: The Ar+ and N2 charge transfer reaction
Authors:Mikosch, J.; Frühling, U.; Trippel, S.; Schwalm, D.; Weidemüller, M.; Wester, R.
Language:English
Date of Publication (YYYY-MM-DD):2006
Title of Journal:Physical Chemistry Chemical Physics
Journal Abbrev.:Phys. Chem. Chem. Phys. PCCP
Volume:8
Start Page:2990
End Page:2999
Copyright:© Royal Society of Chemistry 2006
Review Status:Peer-review
Audience:Experts Only
Intended Educational Use:No
Abstract / Description: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.
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Group D. Schwalm/Ultra-cold Ensembles (M. Weidemüller)
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