Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004phrva..70c3409g&link_type=abstract
Physical Review A, vol. 70, Issue 3, id. 033409
Astronomy and Astrophysics
Astrophysics
2
Zeeman And Stark Effects, Theory Of Electronic Structure, Electronic Transitions, And Chemical Binding, Spectral Methods, Magnetic And Electric Fields, Polarization Of Starlight
Scientific paper
We present oscillator strength spectra of the hydrogen atom in parallel magnetic and electric fields obtained via the pseudospectral method, a two-dimensional spatial discretization scheme. We have observed that for the field strength regimes of interest ( γ⩽0.2a.u. and F⩽108V/m ), a simple perturbation theory analysis accurately accounts for the electric-field effect on most transitions in the Balmer α series. Nearly constant oscillator strengths for some transitions at given field strengths observed by Fassbinder and Schweizer [Astron. Astrophys. 314, 700 (1996)] are explained theoretically. An effective strategy in using the pseudospectal method has also been suggested for handling the hydrogen atom in crossed magnetic and electric fields.
Guan Xiaoxu
Zhang Yuexia
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