Laser Spectroscopic Investigations of Praseodymium I Transitions: New Energy Levels
Figure 3
Finding of the cg wavelength of line λ = 5826.369 Å. (a) Part of the FT spectrum showing the well-resolved line λ = 5826.461 Å, but not the excited line λ = 5826.369 Å. (b) Laser spectroscopic scan over the wavelength region shown in (a). The left part (0-9000 MHz) was detected at fluorescence wavelength Å, the right part at Å. Each part was fitted using the hf structure constants of the corresponding combining level pairs (components outside the detected range were excluded). Lower trace: residuals between recording and fit, magnified by a factor 3.5. From the frequency difference between the centers of gravity, we could find the unknown excitation wavelength λ = 5826.369 Å. (c) Hyperfine level scheme of the line λ = 5826.461 Å. (d) Hyperfine level scheme of the line λ = 5826.369 Å.
