Grating tuning the heliumhyphen;fluorine laser has led to single line output at 6967, 7037, 7128, 7202, 7311, 7489, 7755, and 7800 Aring;. A study of the pressure dependence of the output intensities of these lines unambiguously identifies them as transitions between the 2s2p4(3P)3pand 2s2p4(3P)3sconfigurations of fluorine.
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