Hanle sensitivity (in G) of the first lines of the hydrogen Lyman series.
Notes. This sensitivity is defined as the field strength Bt (typical field) for which ωτ = 1, where ω is the Larmor pulsation and τ is the upper level lifetime. All the transitions leaving the upper level are taken into account in the lifetime. From Sahal-Bréchot (1981, Table I).
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