Advertisement

Electron emission in collisions of fast highly charged bare ions with helium atoms

  • Abhoy Mondal
  • Chittranjan Mandal
  • Malay PurkaitEmail author
Regular Article

Abstract

We have studied the electron emission from ground state helium atom in collision with fast bare heavy ions at intermediate and high incident energies. In the present study, we have applied the present three-body formalism of the three Coulomb wave (3C-3B) model and the previously adopted four-body formalism of the three Coulomb wave (3C-4B). To represent the active electron in the helium atom in the 3C-3B model, the initial bound state wavefunction is chosen to be hydrogenic with an effective nuclear charge. The wavefunction for the ejected electron in the exit channel has been approximated to be a Coulomb continuum wavefunction with same effective nuclear charge. Effectively the continuum-continuum correlation effect has been considered in the present investigation. Here we have calculated the energy and angular distribution of double differential cross sections (DDCS) at low and high energy electron emission from helium atom. The large forward-backward asymmetry is observed in the angular distribution which is explained in terms of the two-center effect (TCE). Our theoretical results are compared with available experimental results as well as other theoretical calculations based on the plain wave Born approximation (PWBA), continuum-distorted wave (CDW) approximation, continuum-distorted wave eikonal-initial state (CDW-EIS) approximation, and the corresponding values obtained from the 3C-4B model [S. Jana, R. Samanta, M. Purkait, Phys. Scr. 88, 055301 (2013)] respectively. It is observed that the four-body version of the present investigation produces results which are in better agreement with experimental observations for all cases.

Graphical abstract

Keywords

Atomic and Molecular Collisions 

References

  1. 1.
    M.E. Rudd, C.A. Sautter, C.L. Bailey, Phys. Rev. 151, 20 (1966)CrossRefADSGoogle Scholar
  2. 2.
    M.E. Rudd, J.H. Macek, Case Stud. At. Phys. 3, 47 (1972)Google Scholar
  3. 3.
    L. Gulyas, P.D. Fainstein, A. Salin, J. Phys. B 28, 245 (1995)CrossRefADSGoogle Scholar
  4. 4.
    L. Gulyas, P.D. Fainstein, A. Salin, Nucl. Instrum. Methods Phys. Res. Sect. B 98, 338 (1995)CrossRefADSGoogle Scholar
  5. 5.
    D.S.F. Crothers, J.F. McCann, J. Phys. B 16, 3229 (1983)CrossRefADSGoogle Scholar
  6. 6.
    P.D. Fainstein, V.H. Ponce, R.D. Rivarola, J. Phys. B 24, 3091 (1991)CrossRefADSGoogle Scholar
  7. 7.
    J.H. Monti, O.A. Fojon, J. Hanssen, R.D. Rivarola, J. Phys. B 46, 145201 (2013)CrossRefADSGoogle Scholar
  8. 8.
    J.H. Monti, O.A. Fojon, J. Hanssen, R.D. Rivarola, J. Phys. B 42, 195201 (2009)CrossRefADSGoogle Scholar
  9. 9.
    Dz. Belkic, J. Phys. B 11, 3529 (1978)CrossRefADSGoogle Scholar
  10. 10.
    C. Dal Cappello, B. Hmouda, A. Naja, G. Gasaneo, J. Phys. B 46, 145203 (2013)CrossRefADSGoogle Scholar
  11. 11.
    M. Foster, D.H. Madison, J.L. Peacher, M. Schulz, S. Jones, D. Fischer, R. Moshammer, J. Ullrich, J. Phys. B 37, 1565 (2004)CrossRefADSGoogle Scholar
  12. 12.
    A.L. Harris, K. Morrison, J. Phys. B 46, 145202 (2013)CrossRefADSGoogle Scholar
  13. 13.
    S. Otranto, C.R. Garibotti, Eur. Phys. J. D 27, 275 (2003)CrossRefGoogle Scholar
  14. 14.
    E.U. Staieu Casagranda et al., J. Phys. B 41, 025204 (2008)CrossRefADSGoogle Scholar
  15. 15.
    D. Fregenal, J.M. Monti, J. Foil, P.D. Fainstein, R.D. Rivarola, G. Bernardi, S. Suarez, J. Phys. B 47, 155204 (2014)CrossRefADSGoogle Scholar
  16. 16.
    J.O.P. Pederson, P. Hvelplund, A.G. Petersen, P.D. Fainstein, J. Phys. B 24, 4001 (1991)CrossRefADSGoogle Scholar
  17. 17.
    D. H Madison, Phys. Rev. A 8, 2449 (1973)CrossRefADSGoogle Scholar
  18. 18.
    P.D. Fainstein, V.H. Ponce, R.D. Rivarola, J. Phys. B 21, 287 (1988)CrossRefADSGoogle Scholar
  19. 19.
    N. Stolterfoht, H. Platten, G. Schiwietz, D. Schneider, L. Gulyas, P.D. Fainstein, A. Salin, Phys. Rev. A 52, 3796 (1995)CrossRefADSGoogle Scholar
  20. 20.
    L.C. Tribedi, P. Richard, L. Gulyas, M.E. Rudd, Phys. Rev. A 63, 062724 (2001)CrossRefADSGoogle Scholar
  21. 21.
    M. Foster, D.H. Madison, J.L. Pacher, M. Schulz S. Jones, D. Fischer, R. Moshammer, J. Ullrich, J. Phys. B 37, 1565 (2004)CrossRefADSGoogle Scholar
  22. 22.
    D. Fischer, R. Moshammer, M. Schulz, A. Voitkiv, J. Ullrich, J. Phys. B 36, 3555 (2003)CrossRefADSGoogle Scholar
  23. 23.
    D. Misra, A. Kelkar, U. Kadhane, A. Kumar, Y.P. Singh, L.C. Tribedi, P.D. Fainstein, Phys. Rev. A 75, 052721 (2007)CrossRefADSGoogle Scholar
  24. 24.
    D. Misra, K.V. Thulasiram, W. Fernandes, A.H. Kelkar, U. Kadhane, A. Kumar, Y. Singh, L. Gulyas, L.C. Tribedi, Nucl. Instrum. Methods Phys. Res. B 267, 157 (2009)CrossRefADSGoogle Scholar
  25. 25.
    J.M. Monti, D. Fregenal, S. Suarez, P.D. Fainstein, R.D. Rivarola, G. Bernardi, J. Fiol, J. Phys. B 45, 145202 (2012)CrossRefADSGoogle Scholar
  26. 26.
    S. Jana, R. Samanta, M. Purkait, Eur. Phys. J. D 66, 243 (2012)CrossRefADSGoogle Scholar
  27. 27.
    S. Jana, R. Samanta, M. Purkait, Phys. Scr. 88, 055301 (2013)CrossRefADSGoogle Scholar
  28. 28.
    A. Nordsieck, Phys. Rev. 93, 785 (1954)CrossRefADSMathSciNetzbMATHGoogle Scholar
  29. 29.
    S. Jana, C.R. Mandal, M. Purkait, J. Phys. B 48, 045203 (2015)CrossRefADSGoogle Scholar
  30. 30.
    R.R. Lewis, Phys. Rev. A 102, 537 (1956)CrossRefADSzbMATHGoogle Scholar
  31. 31.
    C. Sinha, N.C. Sil, J. Phys. B 11, L333 (1978)CrossRefADSGoogle Scholar
  32. 32.
    S. C Mukherjee, K. Roy, N.C. Sil, Phys. Rev. A 12, 1719 (1975)CrossRefADSGoogle Scholar
  33. 33.
    N. Stolterfoht, R.D. DuBois, R.D Rivarola, Electron Emission in Heavy Ion-Atom Collisions (Springer, Berlin, 1997)Google Scholar
  34. 34.
    L.C. Tribedi, P. Richard, Y.O. Wang, C.D. Lin, L. Gulyas, M.E. Rudd, Phys. Rev. A 58, 3619 (1998)CrossRefADSGoogle Scholar
  35. 35.
    D. Misra, A.H. Kelkar, P.D. Fainstein, L.C. Tribedi, J. Phys. B 45, 225201 (2012)CrossRefADSGoogle Scholar

Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Abhoy Mondal
    • 1
  • Chittranjan Mandal
    • 1
  • Malay Purkait
    • 1
    Email author
  1. 1.Department of PhysicsKolkataIndia

Personalised recommendations