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Molecular Beam Studies of Ionization Processes in Collisions of Excited Rare Gas Atoms

  • Brunetto Brunetti
  • Franco Vecchiocattivi
Part of the NATO ASI Series book series (NSSB, volume 196)

Abstract

Rare gas atoms in their lowest excited levels exhibit interesting properties mainly due to their high electronic energy and their long lifetime. Actually their energy goes from 19.82 eV for the He atom in the 23S state and 8.32 eV of the Xe atom in the 3P2 state, while the lifetime ranges from 4. 2×103 s for the former atom to 0.078 s for the latter. These characteristics make possible several processes during the collisions with atomic and molecular targets: electronic energy transfer, ionization reactions or chemical reactions leading to the formation of an excimer molecule are some examples. Because their importance in several applications such as plasmas, electrical discharges or laser systems, these processes are extensively studied both in bulk systems [1] and under single collision conditions [2–4]. The long lifetime of these species makes possible the study of collisional processes of excited rare gas atoms by the molecular beam technique.

Keywords

Collision Energy Ionization Cross Section Potential Energy Curve Associative Ionization Electronic Energy Transfer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1989

Authors and Affiliations

  • Brunetto Brunetti
    • 1
  • Franco Vecchiocattivi
    • 1
  1. 1.Dipartimento di Chimica dell’UniversitàPerugiaItaly

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