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Related Experiment Videos

Reactive collisions between CH+ and O-.

A Le Padellec1, E M Staicu-Casagrande, T Nzeyimana

  • 1LCAR UMR 5589, Université Paul Sabatier-Toulouse III, route de Narbonne 118 Batiment IIIR1b4, 31062 Toulouse Cedex 4 France. arnaud.lepadellec@irsamc.ups-tlse.fr

The Journal of Chemical Physics
|May 6, 2006
PubMed
Summary

This study measured cross sections for CH+ + O- collisions, forming CO+ and HCO+ ions. These reactions are efficient and relevant for astrochemical models of interstellar clouds.

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Area of Science:

  • Astrochemistry
  • Chemical Physics
  • Quantum Chemistry

Background:

  • Carbon monoxide cation (CO+) and formyl cation (HCO+) are key molecules in interstellar chemistry.
  • Understanding ion-molecule reactions is crucial for modeling interstellar environments.

Purpose of the Study:

  • To measure integral cross sections for CO+ and HCO+ formation in CH+ + O- collisions.
  • To assess the relevance of these reactions for astrochemical models.

Main Methods:

  • Utilized a merged-beam apparatus with keV beams.
  • Measured reaction cross sections for specific ion-molecule interactions.

Main Results:

  • Quantified the efficiency of reactive ionization forming CO+.

Related Experiment Videos

  • Quantified the efficiency of associative ionization forming HCO+.
  • Both processes showed high efficiency.

    • Conclusions:

    • The high efficiency of CO+ and HCO+ formation in CH+ + O- collisions supports their inclusion in astrochemical models.
    • These reactions are significant pathways for producing important interstellar cations.