Advertisement

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

Angular Momentum Angular Momentum Vector Nice Agreement Electronic Angular Momentum Electron Promotion 
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.

References

  1. 1.
    R.Schuch, R.Hoffmann, K.Müller, E.Pflanz, H.Schmidt-Böcking, H.Specht Z.Phys. A316 (1984) 5 and references thereinADSGoogle Scholar
  2. 2.
    V.Dangendorf, H.Schmidt-Böcking, W.Fritsch, J.Ullrich, S.Kelbch, C.Kelbch Nucl.Instr.Meth. B23 (1987) 170ADSGoogle Scholar
  3. 3.
    K.Taulbjerg, J.S.Briggs, J.S.Vaaben J.Phys. B9 (1976) 170Google Scholar
  4. 4.
    W.Fritsch and C.D.Lin Phys.Rev. A31 (1985) 1164ADSGoogle Scholar

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

Personalised recommendations