Research Article
Isotope Shifts in High Lying Levels of Dy I and Er I by High-Resolution UV Laser Spectroscopy
Table 1
Wavelengths of the studied transitions and properties of the lower and upper levels in Dy I and Er I.
| Element | Wavelength (nm) | Lower level | Upper level | Configuration | Level | Energy (cmā1) | Configuration | Level | Energy (cmā1) |
| Dy | 401.382 | | | 0.0 | | (6,2)7 | 24906.86 | | 404.597 | | | 0.0 | | (8,1)7 | 24708.96 | Er | 400.796 | | | 0.0 | | (6,1)7 | 24943.272 |
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