State selective photo-recombination cross sections in Be-like C and Al ions

Regular Article

Abstract

We report results from detailed state selective photo-recombination study along with the doubly excited autoionizing resonances in Be-like C2+ and Al9+ ions. In the present investigation, the primary focus is on detailed energy profiles of the individual photo-recombination cross sections. The calculation was carried out for the excited Rydberg states of type 1s22sns(1Se) which interact with the odd-parity continua up to the C3+ and Al10+ 2p threshold limit. The numerical evaluation has been performed at a fine energy mesh across all the autoionizing Rydberg series of resonances 1s22pns(1P0) converging to Li-like ion 2p threshold. The method of calculation keeps the essential ingredients of the Feshbach projection operator approximation. The photo-ionization cross sections have been evaluated with and without relativistic effects included into the R-matrix numerical procedures, while the allowance for both quantum interference between dielectronic and radiative recombination, and overlapping resonances has been done utilizing results from the earlier R-matrix Floquet calculation. We discuss all these results with respect to the effect of quantum interference term on the energy dependence profile of photo-recombination cross section for studied transitions.

Keywords

Atomic Physics 

References

  1. 1.
    H.P. Summers, Adv. At. Mol. Opt. Phys. 33, 275 (1994)ADSCrossRefGoogle Scholar
  2. 2.
    P.C.W. Davies, M.J. Seaton, J. Phys. B: At. Mol. Phys. 2, 757 (1969)ADSCrossRefGoogle Scholar
  3. 3.
    R.H. Bell, M.J. Seaton, J. Phys. B: At. Mol. Phys. 18, 1589 (1985)ADSCrossRefGoogle Scholar
  4. 4.
    A.K. Pradhan, M.J. Seaton, J. Phys. B: At. Mol. Phys. 18, 1589 (1985)ADSCrossRefGoogle Scholar
  5. 5.
    O. Zabaydullin, J. Dubau, J. Phys. B: At. Mol. Opt. Phys. 45, 115002 (2012)ADSCrossRefGoogle Scholar
  6. 6.
    T.W. Gorczyca, F. Robicheaux, M.S. Pindzola, N.R. Badnell, Phys. Rev. A 52, 3852 (1995)ADSCrossRefGoogle Scholar
  7. 7.
    T.W. Gorczyca, N.R. Badnell, D.W. Savin, Phys. Rev. A 65, 062707 (2002)ADSCrossRefGoogle Scholar
  8. 8.
    T.W. Gorczyca, O. Zatsarinny, H.-L. Zhou, S.T. Manson, Z. Felfli, A.Z. Msezane, Phys. Rev. A 68, 050703(R) (2004)CrossRefGoogle Scholar
  9. 9.
    F. Robicheaux, T.W. Gorczyca, M.S. Pindzola, N.R. Badnell, Phys. Rev. A 52, 1319 (1995)ADSCrossRefGoogle Scholar
  10. 10.
    N.R. Badnell, M.G. O’Mullane, H.P. Summers, Z. Altun, M.A. Bautista, J. Colgan, T.W. Gorczyca, D.M. Mitnik, M.S. Pindzola, O. Zatsarinny, A&A 406, 1151 (2003)ADSCrossRefGoogle Scholar
  11. 11.
    K.J. LaGattuta, Phys. Rev. A 36, 4662 (1987)ADSCrossRefGoogle Scholar
  12. 12.
    K.J. LaGattuta, Phys. Rev. A 38, 1820 (1988)ADSCrossRefGoogle Scholar
  13. 13.
    S.L. Haan, V.L. Jacobs, Phys. Rev. A 40, 80 (1989)ADSCrossRefGoogle Scholar
  14. 14.
    V.L. Jacobs, E. Behar, J. Quant. Spectrosc. Radiat. Transfer 65, 317 (2000)ADSCrossRefGoogle Scholar
  15. 15.
    N.R. Badnell, M.S. Pindzola, Phys. Rev. A 45, 2820 (1992)ADSCrossRefGoogle Scholar
  16. 16.
    E. Behar, V.L. Jacobs, J. Oreg, A. Bar-Shalom, S.L. Haan, Phys. Rev. A 69, 022704 (2004)ADSCrossRefGoogle Scholar
  17. 17.
    V. Stancalie, Phys. Plasmas 12, 043301 (2005)ADSCrossRefGoogle Scholar
  18. 18.
    V. Stancalie, Phys. Plasmas 12, 100705 (2005)ADSCrossRefGoogle Scholar
  19. 19.
    F. Robicheaux, S.D. Loch, M.S. Pindzola, C.P. Ballance, Phys. Rev. Lett. 105, 233201 (2010)ADSCrossRefGoogle Scholar
  20. 20.
    M.S. Pindzola, S.D. Loch, F. Robicheaux, Phys. Rev. A 83, 042705 (2011)ADSCrossRefGoogle Scholar
  21. 21.
    V. Stancalie, Nucl. Instrum. Methods Phys. Res. B 279, 147 (2012)ADSCrossRefGoogle Scholar
  22. 22.
    V. Stancalie, Laser Part. Beams 31, 1 (2013)ADSCrossRefGoogle Scholar
  23. 23.
    V. Stancalie, Phys. Scr. 61, 459 (2000)ADSCrossRefGoogle Scholar
  24. 24.
    K.A. Berrington, J. Phys. B: At. Mol. Phys. 18, L395 (1985)ADSCrossRefGoogle Scholar
  25. 25.
    H. Teng, H. Knopp, S. Ricz, S. Schippers, K.A. Berrington, A. Müller, Phys. Rev. A 61, 060704(R) (2000)ADSCrossRefGoogle Scholar
  26. 26.
    O. Latinne, N.J. Klistra, M. Dörr, M.J. Purvis, M. Terao-Dunseath, C.J. Joichain, P.G. Burke, C.J. Noble, Phys. Rev. Lett. 74, 46 (1995)ADSCrossRefGoogle Scholar
  27. 27.
    P.G. Burke, P. Francken, C.J. Joichain, J. Phys. B: At. Mol. Opt. Phys. 24, 761 (1991)ADSCrossRefGoogle Scholar
  28. 28.
    K.G. Dyall, I.P. Grant, C.T. Johnson, F.A. Parpia, E.P. Plummer, Comput. Phys. Commun. 55, 425 (1989)ADSCrossRefGoogle Scholar
  29. 29.
    V.L. Jacobs, Phys. Rev. A 31, 383 (1985)ADSCrossRefGoogle Scholar
  30. 30.
    K.A. Berrington, W.B. Eissner, P.H. Norrington, Comput. Phys. Commun. 92, 290 (1995)ADSCrossRefGoogle Scholar
  31. 31.
    V. Stancalie, V.M. Burke, A. Sureau, Phys. Scr. 59, 52 (1999)ADSCrossRefGoogle Scholar
  32. 32.
    U. Fano, Phys. Rev. A 24, 2402 (1981)ADSCrossRefGoogle Scholar
  33. 33.
    M. Zimmermann, N. Grün, W. Scheid, J. Phys. B: At. Mol. Opt. Phys. 30, 5259 (1997)ADSCrossRefGoogle Scholar
  34. 34.
    K. Sakimoto, M. Terao, K. Berrington, Phys. Rev. A 42, 291 (1990)ADSCrossRefGoogle Scholar
  35. 35.
    The Opacity Project Team, The Opacity Project (IOPP, 1995), Vol. 1Google Scholar

Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Department of LasersNational Institute for Laser, Plasma and Radiation PhysicsMagurele-IlfovRomania

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