Chemistry With Controlled Ions

Stefan Willitsch

Department of Chemistry, University of Basel, Klingelbergstrasse 80, 4056 Basel, Switzerland


  1. I. Introduction
  2. II. Cooling and Control of Ions in the Gas Phase
    1. A. Ion Trapping
    2. B. Cooling by Collisions with Neutrals
    3. C. Laser and Sympathetic Cooling: Coulomb Crystallization of Ions
    4. D. Selective Preparation of Quantum States
    5. E. Preparation of Specific Molecular Conformations
  3. III. Control of Neutral Molecules in the Gas Phase
    1. A. Cooling and Control of the Translational and Internal Molecular Degrees of Freedom
    2. B. Conformer Selection
  4. IV. Ion–Molecule Reaction Dynamics: A Brief Outline
  5. V. Applications and Examples
    1. A. Translationally Cold Ion–Molecule Collisions
    2. B. Single-Ion Chemistry
    3. C. Energy- and State-Controlled Reactions
    4. D. Conformationally Controlled Ion–Molecule Reactions
  6. VI. Conclusions and Outlook
  7. Acknowledgments
  8. References

I. Introduction

Over the past years, the development of experimental methods for the manipulation of atoms and molecules in the gas phase has made impressive progress. The starting point for these developments was the advent of laser cooling of atoms in the 1970s and 1980s which paved the way for the preparation of trapped ensembles of ultracold atoms and atomic ions [1]. These experimental breakthroughs initiated many exciting applications and new research directions in atomic physics, quantum science, and precision measurements [2–4].

Inspired by the successes with atoms, a variety of ...

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