Azimuthal angular dependence of the K-x-ray emission in swift Ne7+-Ne collisions

  • T. Kambara
  • Y. Awaya
  • Y. Kanai
  • R. Dorner
  • H. Schmidt-Böcking
Conference paper

Abstract

In swift near symmetric heavy ion atom collisions the inner shell excitation is well described in the framework of electron promotion between quasi-molecular orbitals transiently formed during the collision process [1]. For K-shell excitation the vacancy transfer via 2pπ-2pσ-rotational coupling plays a dominating role and yields a characteristic dependence of the 2pσ-vacancy production probability P2pσ(b) on the impact parameter (b). The conservation of angular momentum, where angular momentum of the nuclear motion is transfered into electronic angular momentum, creates a significant shape of P2pσ(b). Systematic experimental investigations [1,2] have shown nice agreement with theory [3,4]. Because of the rotational coupling mechanism the 2pσ-electron should be promoted only into the 2pπx-orbital (its angular momentum vector is perpendicular to the scattering plane). If all other 2pπ-states would be vacant, a subsequent x-ray emission from the 2pπx into the isotropic Is state should reflect by its dipole emission pattern directly this selective 2pπx-promotion.

Keywords

Lution Reso 

References

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Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • T. Kambara
    • 1
  • Y. Awaya
    • 1
  • Y. Kanai
    • 1
  • R. Dorner
    • 2
  • H. Schmidt-Böcking
    • 2
  1. 1.RIKENJapan
  2. 2.Institut für Kemphysik der Universität FrankfurtFrankfurt/M.Germany

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