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Photoionization dynamics of the C2+ ion in Rydberg states

  • Viorica Stancalie
Regular Article
Part of the following topical collections:
  1. Topical Issue: Elementary Processes with Atoms and Molecules in Isolated and Aggregated States

Abstract

The goal of this work is to examine in detail the ionization dynamics of Be-like C ion in Rydberg states. An initial calculation has been done to output the lifetime due to spontaneous decay for unperturbed 1s 22sns (1Se) Rydberg states using the multi-configuration Dirac-Fock (MCDF) method with configuration interaction option implemented in the general-purpose relativistic atomic structure package (GRASP). Both the C2+ ground state and the C3+ target state energies have been carefully calculated. We report results from a detailed and systematic study of the behaviour of complex photoionization amplitudes, the lifetime due to spontaneous decay for unperturbed 1s 22sns (1Se) Rydberg states, the ‘resonant’ phase shift and the rapidly increasing of this shift from well below to well above the resonance position. The sum-over-state method is used to calculate the static dipole polarizability, while the frequency-dependent polarizability values of C2+ ion in these Rydberg states are obtained from two-state model calculation results.

Keywords

Atomic Unit Rydberg State Spontaneous Decay Rydberg Series Dynamic Dipole 
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.
    A.P. Hickman, J. Phys. B 17, L101 (1984) ADSCrossRefGoogle Scholar
  2. 2.
    F. Robicheaux, T.W. Gorczyca, M.S. Pindzola, N.R. Badnell, Phys. Rev. A 52, 1319 (1995) ADSCrossRefGoogle Scholar
  3. 3.
    F. Robicheaux, J. Phys. B 31, L109 (1998) ADSCrossRefGoogle Scholar
  4. 4.
    T.W. Gorczyca, F. Robicheaux, M.S. Pindzola, N.R. Badnell, Phys. Rev. A 52, 3852 (1995) ADSCrossRefGoogle Scholar
  5. 5.
    T.W. Gorczyca, F. Robicheaux, M.S. Pindzola, N.R. Badnell, Phys. Rev. A 54, 2107 (1996) ADSCrossRefGoogle Scholar
  6. 6.
    P.G. Burke, R-Matrix theory of atomic collision, Springer Series on Atomic, Optical, and Plasma Physics (Springer, Heidelberg, 2011)Google Scholar
  7. 7.
    U. Fano, Phys. Rev. A 24, 2402 (1981) ADSCrossRefGoogle Scholar
  8. 8.
    O. Latinne, N.J. Kylstra, M. Dörr, J. Purvis, M. Terao-Dunseath, C.J. Joachain, P.G. Burke, C.J. Noble, Phys. Rev. Lett. 74, 46 (1995)ADSCrossRefGoogle Scholar
  9. 9.
    V. Stancalie, Phys. Plasmas 12, 043301 (2005) ADSCrossRefGoogle Scholar
  10. 10.
    V. Stancalie, Phys. Plasmas 12, 100705 (2005) ADSCrossRefGoogle Scholar
  11. 11.
    P.G. Burke, P. Francken, C.J. Joachain, J. Phys. B 24, 761 (1991)ADSCrossRefGoogle Scholar
  12. 12.
    V. Stancalie, Eur. Phys. J. D 66, 223 (2013)ADSCrossRefGoogle Scholar
  13. 13.
    V Stancalie, Nucl. Instrum. Methods Phys. Res. B 267, 305 (2009)ADSCrossRefGoogle Scholar
  14. 14.
    K.G. Dyal, I.P. Grant, C.T. Johnson, F.A. Parpia, E.P. Plummer, Comput. Phys. Commun. 55, 425 (1989)ADSCrossRefGoogle Scholar
  15. 15.
    J. Mitroy, M.S. Safronova, Ch. W. Clark, J. Phys. B 43, 202001 (2010) ADSCrossRefGoogle Scholar
  16. 16.
    P.H. Norrington, I.P. Grant, J. Phys. B 20, 4869 (1987) ADSCrossRefGoogle Scholar
  17. 17.
    N.A. Cherepkov, Adv. At. Mol. Phys. 19, 395 (1983)ADSCrossRefGoogle Scholar
  18. 18.
    G. Breit, E. Wigner, Phys. Rev. 49, 519 (1936)ADSCrossRefzbMATHGoogle Scholar
  19. 19.
    L.D. Landau, E.M. Lifshitz, Quantum Mechanics (Nonrelativistic Theory) (Pergamon, Oxford, 1976)Google Scholar
  20. 20.
    V. Stancalie, JET EFDA contributors, preprint EFDA-JET-CP(05)02-49Google Scholar
  21. 21.
    V. Stancalie, Laser and Particle Beams 27, 345 (2009)ADSCrossRefGoogle Scholar
  22. 22.
    R. Mukherjee, J. Millen, R. Nath, M.P.A. Jones, T. Pohl, J. Phys. B 44, 184010 (2011) ADSCrossRefGoogle Scholar
  23. 23.
    A.I. Margunov, I. Rotter, S.I. Strakhova, J. Phys. B 32, 1669 (1999) ADSCrossRefGoogle Scholar

Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

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

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