Photoionization of the helium atom in strong magnetic fields

Z. Medin,1 D. Lai,1 A. Y. Potekhin2

1Center for Radiophysics and Space Research, Department of Astronomy, Cornell University, Ithaca, NY 14853, USA
2Ioffe Physico-Technical Institute, Politekhnicheskaya 26, St.Petersburg 194021, Russia

We present Hartree-Fock calculations of the polarization-dependent photoionization cross sections of He atom in strong magnetic fields ranging from 1012 G to 1014 G. Convenient fitting formulae are given as well as related oscillator strengths for various bound-bound transitions. The effects of finite nucleus mass on the radiative opacities are examined using the perturbation theory.

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