Abstract

We discuss the application of quantitatively accurate computational methods to the study of laser-driven two-electron atoms in short intense laser pulses. The fundamental importance of such calculations to the subject area is emphasized. Calculations of single- and double-electron ionization rates at 390 nm are presented.

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References

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  1. E. S. Smyth, J. S. Parker and K. T. Taylor, "Numerical integration of the time-dependent Schrödinger equation for laser-driven helium," Comput. Phys. Commun. 114, 1-14 (1998).
    [CrossRef]
  2. P. G. Burke, P. Francken and C. J. Joachain, "R-matrix-Floquet theory of multiphoton processes," J. Phys. B: At. Mol. Opt. Phys. 24, 751-790 (1991).
    [CrossRef]
  3. M. Dörr, M. Terao-Dunseath, J. Purvis, C. J. Noble, P. G. Burke and C. J. Joachain, "R-matrix-Floquet theory of multiphoton processes. II. Solution of the asymptotic equations in the velocity gauge," J. Phys. B: At. Mol. Opt. Phys. 25, 2809-2829 (1992).
    [CrossRef]
  4. J. S. Parker, D. H. Glass, L. R. Moore, E. S. Smyth, K. T. Taylor and P. G. Burke, "Time-dependent and time-independent methods applied to multiphoton ionization of helium," J. Phys. B: At. Mol. Opt. Phys. 33, L239-L247 (2000).
    [CrossRef]
  5. R. Hasbani, E. Cormier and H. Bachau, "Resonant and non-resonant ionization of helium by XUV ultrashort and intense laser pulses," J. Phys. B: At. Mol. Opt. Phys. 33, 2101-2116 (2000).
    [CrossRef]
  6. A. Scrinzi and B. Piraux, "Two-electron atoms in short intense laser pulses," Phys. Rev. A 58, 1310-1321 (1998).
    [CrossRef]
  7. J. S. Parker, E. S. Smyth and K. T. Taylor, "Intense-field multiphoton ionization of helium," J. Phys. B: At. Mol. Opt. Phys. 31, L571-L578 (1998).
    [CrossRef]
  8. J. S. Parker, L. R. Moore, E. S. Smyth and K. T. Taylor, "One- and two-electron numerical models of multiphoton ionization of helium," J. Phys. B: At. Mol. Opt. Phys. 33, 1057-1067 (2000).
    [CrossRef]
  9. J. S. Parker, L. R. Moore, K. J. Meharg, D. Dundas and K. T. Taylor, "Double-electron above threshold ionization of helium," J. Phys. B: At. Mol. Opt. Phys. 34, L69-L78 (2001).
    [CrossRef]
  10. J. S. Parker, L. R. Moore, D. Dundas and K. T. Taylor, "Double ionization of helium at 390 nm," J. Phys. B: At. Mol. Opt. Phys. 33, L691-L698 (2000).
    [CrossRef]

Other

E. S. Smyth, J. S. Parker and K. T. Taylor, "Numerical integration of the time-dependent Schrödinger equation for laser-driven helium," Comput. Phys. Commun. 114, 1-14 (1998).
[CrossRef]

P. G. Burke, P. Francken and C. J. Joachain, "R-matrix-Floquet theory of multiphoton processes," J. Phys. B: At. Mol. Opt. Phys. 24, 751-790 (1991).
[CrossRef]

M. Dörr, M. Terao-Dunseath, J. Purvis, C. J. Noble, P. G. Burke and C. J. Joachain, "R-matrix-Floquet theory of multiphoton processes. II. Solution of the asymptotic equations in the velocity gauge," J. Phys. B: At. Mol. Opt. Phys. 25, 2809-2829 (1992).
[CrossRef]

J. S. Parker, D. H. Glass, L. R. Moore, E. S. Smyth, K. T. Taylor and P. G. Burke, "Time-dependent and time-independent methods applied to multiphoton ionization of helium," J. Phys. B: At. Mol. Opt. Phys. 33, L239-L247 (2000).
[CrossRef]

R. Hasbani, E. Cormier and H. Bachau, "Resonant and non-resonant ionization of helium by XUV ultrashort and intense laser pulses," J. Phys. B: At. Mol. Opt. Phys. 33, 2101-2116 (2000).
[CrossRef]

A. Scrinzi and B. Piraux, "Two-electron atoms in short intense laser pulses," Phys. Rev. A 58, 1310-1321 (1998).
[CrossRef]

J. S. Parker, E. S. Smyth and K. T. Taylor, "Intense-field multiphoton ionization of helium," J. Phys. B: At. Mol. Opt. Phys. 31, L571-L578 (1998).
[CrossRef]

J. S. Parker, L. R. Moore, E. S. Smyth and K. T. Taylor, "One- and two-electron numerical models of multiphoton ionization of helium," J. Phys. B: At. Mol. Opt. Phys. 33, 1057-1067 (2000).
[CrossRef]

J. S. Parker, L. R. Moore, K. J. Meharg, D. Dundas and K. T. Taylor, "Double-electron above threshold ionization of helium," J. Phys. B: At. Mol. Opt. Phys. 34, L69-L78 (2001).
[CrossRef]

J. S. Parker, L. R. Moore, D. Dundas and K. T. Taylor, "Double ionization of helium at 390 nm," J. Phys. B: At. Mol. Opt. Phys. 33, L691-L698 (2000).
[CrossRef]

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Figures (1)

Fig. 1.
Fig. 1.

Single- and double-electron ionization rates in helium, obtained at a laser wavelength of 390 nm.

Tables (1)

Tables Icon

Table 1. Single-ionization rates in helium at 390 nm

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