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Philosophical transactions - Royal Society. Mathematical, physical and engineering sciences

Detection of Single Atoms by Resonance Ionization Spectrometry: Discussion

Walter Kutschera, G. S. Hurst, H. Oeschger, G. Korschinck, D. S. Donahue, A.E. Litherland, Ken W. D. Ledingham, W. Henning

Published Aug 1, 1987• 0 citations
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Single-colour resonant multiphoton ionization transitions of atomic gadolinium have been investigated by resonance ionization mass spectrometry. A total of 72 transitions have been found in the wavelength range of 530 - 635 nm. The wavelengths, relative intensities, linewidths and isotope shifts have been obtained for most of these transitions. In addition, the initial state for each transition has also been assigned employing the multicolour pump - probe technique. From the analysis of these transitions, it is found that most of the observed transitions arise from the three-photon process via the resonant first or second state and their isotope shifts correspond well with those of the resonant states. Based on these results, we have proposed new high-lying states and have determined isotope shifts of several excited states.