| Issue |
Europhys. Lett.
Volume 37, Number 6, February III 1997
|
|
|---|---|---|
| Page(s) | 391 - 396 | |
| Section | Atomic, molecular and optical physics | |
| DOI | https://doi.org/10.1209/epl/i1997-00161-8 | |
| Published online | 01 September 2002 | |
Two-photon transitions in hydrogenic atoms via a Sturmian basis for the Dirac Coulomb Green's function
Laboratoire de Chimie Physique — Matière et Rayonnement, 11 rue Pierre et Marie Curie, Université Pierre et Marie Curie Paris VI, F-75231 Paris Cedex 05, France
Received:
29
October
1996
Accepted:
21
January
1997
Using a Sturmian-like expansion
of the (first-order) Dirac Coulomb Green's
function, the two-photon
probability amplitude for the
transition in hydrogenic systems is calculated as a function
of nuclear charge Z. A comparison between relativistic and
non-relativistic treatments is made, taking care of
the influence of retardation in both cases.
PACS: 32.80.Wr – Other multiphoton processes / 03.65.Pm – Relativistic wave equations / 31.15.Md – Perturbation theory
© EDP Sciences, 1997
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