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The European Physical Journal D

Detection by two-photon ionization and magnetic trapping of cold Rb2 triplet state molecules

Jérôme Lozeille, A. Fioretti, C. Gabbanini, Yanyan Huang, Hyewon Pechkis, Dajun Wang, P. L. Gould, Edward E. Eyler, William C. Stwalley, M Aymar, Olivier Dulieu

Published Apr 19, 2006• 59 citations
Publisher
DOI
10.1140/epjd/e2006-00084-4

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In this paper, we report the measurement of Rb2 molecule formation rate constant due to a two body process in a magneto-optical trap as a function of the sample temperature. The ground state molecules are detected by two-photon ionization, through the intermediate a 3Σ + → 23Π g molecular band. Our results show that the Rb2 molecules formed in the MOT could be due to a wave shape resonance, which enhances the molecule formation rate. This effect may be used to enhance the molecule production; and therefore it maybe important to future experiments involving production and trapping of cold ground state molecules.