A laser resonance technique using Doppler tuning has been applied to measure transitions between highly excited states of highly ionized fluorine. Resonance transitions betweenn=9 andn=10 levels of19F8+with a mean wavelength of 4796.06plusmn;0.24 Aring; were observed. This wavelength is close to the calculated value of 4796.16 Aring; for the wavelength of the 92L17/2ndash;102M19/2transition.
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