ΔF=+or-2 transitions in the hyperfine spectrum of the λ=576.520 nm line in Eu I

摘要: The occurrence of Delta F=+or-2 transitions in the hyperfine spectrum lambda =576.520 nm line Eu I has been investigated by means high-resolution laser-atomic-beam spectroscopy. External magnetic fields have shown to cause these normally forbidden transitions. dependence strength one relative a neighbouring F=+or-1 transition studied as function external field. An interpretation results is given terms field-dependent eigenstates.