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>Collinear laser and slowhyphen;ionhyphen;beam apparatus for highhyphen;precision laserhyphen;rf doublehyphen;resonance spectroscopy
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Collinear laser and slowhyphen;ionhyphen;beam apparatus for highhyphen;precision laserhyphen;rf doublehyphen;resonance spectroscopy
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机译：Collinear laser and slowhyphen;ionhyphen;beam apparatus for highhyphen;precision laserhyphen;rf doublehyphen;resonance spectroscopy
A new apparatus has been constructed for highhyphen;precision hyperfine structure measurement of atomic ions by laserhyphen;radiohyphen;frequency doublehyphen;resonance technique involving a slow ion beam and a laser in collinear geometry. The low ion energy (1ndash;1.5 keV) leads to longer interaction time with the applied rf field. Consequently, extremely narrow linewidths of sim;60 kHz have been observed for the first time in such systems. The apparatus has been used for the measurement of hyperfine structure of the 4f7(8S0)5d9D02,3,4,5metastable levels in151Eu+and153Eu+. The magnetic dipole and the electric quadrupole hyperfine constants,AandB, respectively, have been determined with higher precision (2ndash;3 orders of magnitude).
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