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Abstract. Lifetimes of Rydberg states of the triplet-series 5s ns 3S 1 with n= 19-23, 35 and 5s nd 3D 3 with n= 18-20, 23-28 in the spectrum of neutral strontium have been determined. Observation of the exponential decay after excitation by a pulsed laser in a fast atomic beam and subsequent state-selective field ionization was employed. The lifetimes of the states of the 3Sl-series show the expected n* 3 dependence on the effective principal quantum number, while the 3D3-series is disturbed by configuration mixing. Furthermore, state re-populations induced by black-body radiation have been observed.

High-resolution state-selected ion-molecule reaction studies using pulsed field ionization photoelectronsecondary ion coincidence method Rev. Sci. Instrum. 74, 4096 (2003); 10.1063/1.1599071Selective field ionization of high Rydberg states: Application to zero-kinetic-energy photoelectron spectroscopy Dissociation of stateselected complex ions studied by massselective pulsed field threshold ionization spectroscopy J. Chem. Phys. 97, 5923 (1992); 10.1063/1.463754The first ionization potential of zirconium atoms determined by two laser, fieldionization spectroscopy of high lying Rydberg series