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 (cm^−1)	Configuration	Level	Energy (cm^−1)
Dy	401.382	4𝑓^106𝑠^2	^5𝐼8	0.0	4𝑓^106𝑠6𝑝	(6,2)7	24906.86
	404.597	4𝑓^106𝑠^2	^5𝐼8	0.0	4𝑓^106𝑠6𝑝	(8,1)7	24708.96
Er	400.796	4𝑓^126𝑠^2	^3𝐻6	0.0	4𝑓^126𝑠6𝑝	(6,1)7	24943.272