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Issue 42, 2011
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Trapping molecular ions formed via photo-associative ionization of ultracold atoms

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Abstract

The formation of 40Ca2+ molecular ions is observed in a hybrid 40Ca magneto-optical and ion trap system. The molecular ion formation process is determined to be photo-associative ionization of ultracold 40Ca atoms. A lower bound for the two-body rate constant is found to be [small beta, Greek, macron] ≥ 2 ± 1 × 10−15 cm3 Hz. Ab initio molecular potential curves are calculated for the neutral Ca2 and ionic Ca2+ molecules and used in a model that identifies the photo-associative ionization pathway. As this technique does not require a separate photo-association laser, it could find use as a simple, robust method for producing ultracold molecular ions.

Graphical abstract: Trapping molecular ions formed via photo-associative ionization of ultracold atoms

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Publication details

The article was received on 15 Apr 2011, accepted on 02 Jun 2011 and first published on 07 Jul 2011


Article type: Paper
DOI: 10.1039/C1CP21205B
Citation: Phys. Chem. Chem. Phys., 2011,13, 18859-18863
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    Trapping molecular ions formed via photo-associative ionization of ultracold atoms

    S. T. Sullivan, W. G. Rellergert, S. Kotochigova, K. Chen, S. J. Schowalter and E. R. Hudson, Phys. Chem. Chem. Phys., 2011, 13, 18859
    DOI: 10.1039/C1CP21205B

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