Hyperfine splitting and broadening have been measured for seven doublet series laser lines between the 2<i>s</i><sup>2</sup>2<i>p</i><sup>4</sup> (<sup>3</sup><i>P</i>)3<i>p</i> and 2<i>s</i><sup>2</sup>2<i>p</i><sup>4</sup>(<sup>3</sup><i>P</i>)3<i>s</i> configurations of fluorine, allowing for unambiguous determination of the hyperfine splittings in these levels. The broadening is shown to be a strong indication that the upper-level fluorine atoms are remnants of dissociative states of HeF.
© 1978 Optical Society of America
L. O. Hocker, "High-resolution study of the helium-fluorine laser," J. Opt. Soc. Am. 68, 262-265 (1978)