Abstract
Using the method of laser-induced fluorescence in an atomic beam we have measured the hyperfine splitting constants, A and B, of the ground and excited states of the optical transition 4f 76s 2 8S\(_{1/2}\to 4f^{7}\)6s6p 6P5/2 (564.58 nm) for 151 − 155Eu isotopes. For all isotopes, the magnetic dipole constants of the 6P5/2 atomic level are determined to a precision better than 0.04%. The A and B constants for the ground state 8S7/2 of the radioactive 152,154,155Eu were obtained for the first time with a precision better than 0.5%. Our data along with previous ground state hyperfine structure measurements for the stable europium isotopes allow us to determine the hyperfine anomaly for mentioned Eu isotopes.
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Zemlyanoi, S.G., Karaivanov, D.V., Gangrsky, Y.P. et al. Hyperfine splitting constants in the optical transition \(\boldsymbol{{4{f}^{7}} {6{s}^{2}} \;{^{8}{\rm S}_{7/2}} \to {4{f}^{7}} {6{s}6{p}}\; {^{6}{\rm P}_{5/2}} \ {\rm of} \ {^{151-155}{\rm Eu}}}\) isotopes and hyperfine anomaly. Hyperfine Interact 196, 107–113 (2010). https://doi.org/10.1007/s10751-010-0157-8
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DOI: https://doi.org/10.1007/s10751-010-0157-8