Detection by two-photon ionization and magnetic trapping
of cold Rb2 triplet state molecules |
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| Authors: | J Lozeille A Fioretti C Gabbanini Y Huang H K Pechkis D Wang P L Gould E E Eyler W C Stwalley M Aymar O Dulieu |
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| Institution: | (1) Istituto per i Processi Chimico-Fisici del C.N.R., Via G.Moruzzi 1, 56127 Pisa, Italy;(2) Physics Department, University of Connecticut, Storrs, CT 06269, USA;(3) Laboratoire Aimé Cotton, CNRS, Campus d'Orsay, 91405 Orsay Cedex, France |
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| Abstract: | We present detailed experimental spectra and accurate theoretical interpretation of resonance-enhanced
two-photon ionization of ultracold rubidium molecules in the
14000–17000 cm-1 transition energy range. The dimers are formed in a
magneto-optical trap by photoassociation followed by radiative decay into the a 3Σu+
lowest triplet state. The theoretical treatment of the process, which reproduces the main features
of the spectra, takes into account the photoassociation and decay steps as well as the resonant ionization through the manifold
of intermediate gerade states correlated to the 5S + 4D limit. In particular, the energy of the v=1 level of the
potential well has been determined for the first time. In addition, a tight constraint has been put on the position of the
a 3Σu+
repulsive wall. Finally, magnetic trapping of
rubidium molecules in the a 3Σu+ state is demonstrated.
Electronic supplementary material Online Material |
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| Keywords: | 32 80 Pj Optical cooling of atoms trapping 33 80 Ps Optical cooling of molecules trapping 33 20 -t Molecular spectra |
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