Hyperfine structure and isotope shifts in the 595.5-nm (a(3)F(2)-z(5)F(1)) ground-state transition in Zr I.
Two recent determinations of the (91)Zr hyperfine structure in the z(5)F(1) level of Zr I are found to differ by a factor of almost 5. A reexamination of the data confirms the results obtained in our previous investigation: A(z(5)F(1)) = 273.6 +/- 0.3 MHz, B(z(5)F(1)) = 5.9 +/- 0.6 MHz, and hence deltav = -99.6 +/- 1.0 MHz for the (91)Zr-(90)Zr isotope shift in the 595.5-nm (a(3)F(2)-z(5)F(1)) ground-state transition.
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Hannaford