Autoionising 4dnf States and Multiphoton Ionisation Studies in Strontium
In Sr, we report the preliminary data obtained using one-colour and two-colour laser excitations in an atomic beam associated with a time-of-flight (T.O.F.) ion detection technique. In section 1, the Sr+ yield measured in the range 532–541 nm with the one-colour excitation exhibits many resonance lines. They correspond to 2-photon excitation of bound states and 3-photon excitation of autoionising 4d5f states. Results obtained from a two-colour laser excitation via the 5p2 1D2 bound level improve the resolution and confirm the J-level assignation of the 4d5f states from the one-colour experiment. They extend the observation to other members of the 4dnf series (n = 4 and 6).
KeywordsAtomic Beam Yield Spectrum Double Ionisation Excitation Scheme Resonance Profile
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- 5.C.E. Moore, “Atomic Energy Levels”, NBS Circular n° 467, U.S. G.P.O. Washington D.C. (1947).Google Scholar