Two-photon processes in real atoms

F. Robicheaux and Bo Gao
Phys. Rev. Lett. 67, 3066 – Published 25 November 1991
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Abstract

We present a general method for calculating two-photon processes in real atoms by a variant of the usual multichannel quantum-defect theory (MQDT). Most notably, this method enables us to describe processes in which a single photon has enough energy to ionize the atom (above-threshold processes). All effects of intermediate Rydberg series, continua, or autoionizing series are treated on an equal footing and with the same ease; the final state is also treated properly by standard MQDT. This method should also work for many three- or four-photon processes.

  • Received 13 June 1991

DOI:https://doi.org/10.1103/PhysRevLett.67.3066

©1991 American Physical Society

Authors & Affiliations

F. Robicheaux and Bo Gao

  • Joint Institute for Laboratory Astrophysics, University of Colorado, Boulder, Colorado 80309-0440

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Issue

Vol. 67, Iss. 22 — 25 November 1991

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