The collision-induced electric dipole moment of H(n=2) in H-He, Ne and Ar collisions

  • B. Siegmann
  • G. G. Tepehan
  • R. Hippler
  • H. Madeheim
  • H. Kleinpoppen
  • H. O. Lutz
Atomic Collisions

Abstract

The collision-induced electric dipole moment of H(n=2) in H(1s)-Ne and H(1s)-Ar collisions was measured in an energy range of 1 to 25 keV. For these systems we observe a positive electric dipole moment which corresponds to an electron lagging behind the proton. This behaviour is in contrast to recent measurements for the H-He systems, where a negative dipole moment corresponding to an electron moving in front of the proton was observed. A simple explanation for this difference is given.

PACS

34.50.Fa 

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Copyright information

© Springer-Verlag 1994

Authors and Affiliations

  • B. Siegmann
    • 1
  • G. G. Tepehan
    • 2
  • R. Hippler
    • 1
  • H. Madeheim
    • 1
  • H. Kleinpoppen
    • 3
  • H. O. Lutz
    • 1
  1. 1.Fakultät für PhysikUniversität BielefeldBielefeldGermany
  2. 2.Physics Department, Faculty of Sciences and LettersTechnical University of IstanbulMaslak, IstanbulTurkey
  3. 3.Atomic Physics LaboratoryUniversity of StirlingStirlingScotland

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