학술논문
Calculation of the 1s–2s two-photon excitation cross-section in atomic hydrogen.
Document Type
Article
Author
Source
Subject
*PHYSICS
*PHOTONS
*HYDROGEN
*ATOMIC hydrogen
*ELECTRONIC excitation
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Language
ISSN
1434-6060
Abstract
The two-photon excitation cross-section of atomic hydrogen is calculated using explicit summation over intermediate states within the framework of dipole approximation. The matrix element for two-photon excitation is transformed into finite sums, consisting of the product of a radial and angular part. Nine intermediate states are employed in the calculation of the transition matrix element. The two-photon excitation cross-section obtained for the transition 1s 2S1/2–2s 2S1/2in atomic hydrogen is a good agreement with the literature. [ABSTRACT FROM AUTHOR]