Advertisement

Pramana

, Volume 62, Issue 5, pp 1157–1166 | Cite as

Electron dichroism effects in the relativistic (e, 2e) process for K-shell ionization of atoms

  • K. K. Sud
  • G. Purohit
  • A. S. Bhullar
Article

Abstract

In this communication we present theoretical demonstration of electron dichroism in the relativistic (e, 2e) process for K-shell ionization of atoms in non-coplanar asymmetric geometry. The theoretical formalism has been developed in plane wave Born approximation and in this approximation the triple differential cross-section (TDCS) has been expressed as a product of kinematical factors and atomic structure functions. The longitudinal spin asymmetry in the relativistic (e, 2e) process on K-shell of atoms has been shown to depend on the interference between the transition charge and component of the transition current in the direction perpendicular to the scattering plane. Further, the longitudinal spin asymmetry has been shown to depend on incident electron energy, atomic number of the target, azimuthal angle of the ejected electron and scattered electron angle.

Keywords

Dichroism chiral effect longitudinal spin asymmetry relativistic (e, 2e) process 

PACS Nos

34.80.Dp 34.80.Nz 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    C Westphal, J Bansmann, M Getzlaff and G Schönhense,Phys. Rev. Lett. 63, 151 (1989)CrossRefADSGoogle Scholar
  2. [2]
    F Heiser, O Gebner, U Hergenhahn, J Viefhaus, K Wieliczek, N Saito and U Becker,J. Elect. Spectr. Relativ. Phenom. 79, 415 (1996)CrossRefGoogle Scholar
  3. [3]
    J Berakdar and H Klar,Phys. Rev. Lett. 70, 3008 (1993)CrossRefGoogle Scholar
  4. [4]
    J Viefhaus, L Avaldi, G Snell, M Wiedenhöft, R Hentges, A R⪦el, F Schäfers, D Menke, U Heinzmann, A Engelns, J Berakdar, H Klar and U Becker,Coincidence studies of electron and photon impact ionisation (Plenum Press, New York, 1997) p. 145Google Scholar
  5. [5]
    S Mayer and J Kessler,Phys. Rev. Lett. 74, 4803 (1995)CrossRefADSGoogle Scholar
  6. [6]
    S Mayer, C Nolting and J Kessler,J. Phys. B29, 3497 (1996)ADSGoogle Scholar
  7. [7]
    C Nolting, S Mayer and J Kessler,J. Phys. B30, 5491 (1997)ADSGoogle Scholar
  8. [8]
    P S Farago,J. Phys. B14, L743 (1981)ADSGoogle Scholar
  9. [9]
    K Blum and D Thompson,Adv. At. Mol. Opt. Phys. 38, 40 (1997)Google Scholar
  10. [10]
    K Blum,J. Phys. B23, L253 (1990)ADSMathSciNetGoogle Scholar
  11. [11]
    D Thompson and M Kinnin,J. Phys. B28, 2473 (1995)ADSGoogle Scholar
  12. [12]
    D G Thompson and K Blum,J. Phys. B33, L773 (2000)ADSGoogle Scholar
  13. [13]
    A S Bhullar and K K Sud,J. Elect. Spectr. Relativ. Phenom. 114–116, 123 (2001)CrossRefGoogle Scholar
  14. [14]
    K K Sud,Current developments in atomic, molecular and chemical physics with applications (Kluwer/Plenum Publishers, London, UK, 2002) pp. 185–190Google Scholar
  15. [15]
    T W Donnelly, inPerspective of nuclear physics at intermediate energies edited by S Beffi, C Ciofi degli Aiti and M M Giannini (World Scientific, Singapore, 1984) p. 244Google Scholar
  16. [16]
    D H Jakubassa-Amundsen,Z. Phys. D11, 305 (1989)ADSGoogle Scholar
  17. [17]
    D H Jakubassa-Amundsen,J. Phys. B25, 1297 (1992)ADSGoogle Scholar
  18. [18]
    D H Jakubassa-Amundsen,J. Phys. B28, 259 (1995)ADSGoogle Scholar
  19. [19]
    D H Jakubassa-Amundsen,Phys. Rev. A53, 2359 (1996)ADSGoogle Scholar
  20. [20]
    S Keller and R M Dreizier,Phys. Rev. A57, 3652 (1998)ADSGoogle Scholar
  21. [21]
    A S Bhullar and K K Sud,Indian J. Phys. 73B (2), 299 (1999)Google Scholar
  22. [22]
    S Keller and C T Whelan,J. Phys. B27, L771 (1994)ADSGoogle Scholar
  23. [23]
    L U Ancarani, S Keller, H Ast, C T Whelan, H R J Walters and R M Dreizler, inCoincidence studies of electron and photon impact ionization edited by C T Whelan and H R J Walters, (Plenum, New York, 1997) p. 209Google Scholar
  24. [24]
    L U Ancarani, S Keller, H Ast, C T Whelan, H R J Walters and R M Dreizler,J. Phys. B31, 609 (1998)ADSGoogle Scholar
  25. [25]
    S Keller, C T Whelan, H R J Walters and R M Dreizler,Phys. Rev. A50, 3865 (1994)ADSGoogle Scholar
  26. [26]
    S Keller, R M Dreizler, H Ast, C T Whelan and H R J Walters,Phys. Rev. A53, 2295 (1996)ADSGoogle Scholar
  27. [27]
    K H Besch, M Sauter and W Nakel,J. Phys. B30, L73 (1997)ADSGoogle Scholar
  28. [28]
    M Sauter, N Keller and W Nakel,J. Phys. B31, L947 (1998)ADSGoogle Scholar
  29. [29]
    R M Dreizler, H Ast, S Keller, C T Whelan, L U Ancarani and H R J Walters,J. Phys. B30, 77 (1997)ADSGoogle Scholar
  30. [30]
    S Keller, R M Dreizler, L U Ancarani, H Ast, H R J Walters and C T Whelan,Phys. Rev. A59, 1284 (1999)ADSGoogle Scholar

Copyright information

© Indian Academy of Sciences 2004

Authors and Affiliations

  • K. K. Sud
    • 1
  • G. Purohit
    • 1
  • A. S. Bhullar
    • 1
  1. 1.Department of PhysicsM.L.S. UniversityUdaipurIndia

Personalised recommendations