Browsing by Author "Fields, G."

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    Autoionization of very-high-n strontium Rydberg atoms
    (IOP Publishing, 2017) Zhang, X.; Fields, G.; Dunning, F.B.; Yoshida, S.; Burgdörfer, J.
    The autoionization of high n, n~280-430, strontium Rydberg states through excitation of the 5s 2S1/2→5p 2P1/2 transition in the core ion is investigated. The autoionization rates decrease rapidly as L is increased paving the way for production of long-lived two-electron-excited planetary atoms.
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    Autoionization of very-high-n strontium Rydberg states
    (American Physical Society, 2018) Fields, G.; Zhang, X.; Dunning, F.B.; Yoshida, S.; Burgdörfer, J.
    We study, using a combination of experiment and theory, the excitation and decay of very-high-n(n∼280–430) strontium autoionizing Rydberg states formed by near-resonant driving of the 5s2S1/2→5p2P1/2 core-ion transition. The branching ratio between decay through radiative transitions and through autoionization is explored. Autoionization rates are measured as a function of both the nand ℓ quantum numbers of the Rydberg electron. The nonstationary decay dynamics is studied by creating and manipulating Rydberg wave packets and by varying the laser pulse that drives the core excitation.