Probabilities of radiative dipole transitions of parahelium in an electric field |
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Authors: | V D Ovsiannikov A A Tarusin A A Kamenski |
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Institution: | (1) Voronezh State University, Voronezh, 394006, Russia |
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Abstract: | Quadratic Stark corrections to the wave functions, matrix elements, and probabilities of transitions between the singlet states 1 S 0 and 1 P 1 of helium atoms are calculated. The coefficients of the polynomials that depend on the effective principal quantum number of the upper level v f and that approximate the numerical values of the polarizabilities, the quadratic corrections to the wave functions, and the probabilities of transitions to highly excited Rydberg states with large v f are determined. The results of calculations testify that the probabilities of all σ transitions n i 1 S 0 → n f 1 P 1 and π transitions to the states with n f > n i /2 are decreased with increasing electric field strength, except for the transition 21 S 0 → 21 P 1, whose probability increases both for σ and for π transitions. |
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