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    Two-colour intensity suppression of multiphoton ionization of atomic deuterium


    Bowe, P. and O'Neill, R.W. and van der Burgt, Peter J.M. and Slevin, James A. and Raczynski, A. and Zaremba, J. and Chwirot, S. (1998) Two-colour intensity suppression of multiphoton ionization of atomic deuterium. Journal of Physics B: Atomic, Molecular and Optical Physics, 31 (5). pp. 1003-1010. ISSN 0953-4075

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    Abstract

    We report a strong suppression of the three-photon ionization resonant with the 2s state of atomic deuterium at 243 nm by the introduction of a second colour (486 nm) coupling the 2s and 4p states. This coupling reduces the ionization probability by several orders of magnitude. The experiment is performed using fundamental and second harmonic frequencies of the same laser, with laser intensities up to a maximum value of and an atomic target density of the order of . The production of both ions and D(2s) atoms is measured as a function of the intensity of the fundamental beam (486 nm). The experimental data are compared with a theoretical calculation using essential states and taking into account the experimental laser bandwidths.

    Item Type: Article
    Keywords: Two-colour intensity suppression; multiphoton ionization; atomic deuterium;
    Academic Unit: Faculty of Science and Engineering > Experimental Physics
    Item ID: 9809
    Identification Number: https://doi.org/10.1088/0953-4075/31/5/009
    Depositing User: Dr Peter van der Burgt
    Date Deposited: 22 Aug 2018 14:39
    Journal or Publication Title: Journal of Physics B: Atomic, Molecular and Optical Physics
    Publisher: IOP Publishing
    Refereed: Yes
    Funders: Forbairt, European Union
    URI:

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