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 \((2)\ ^{3}\Sigma_{g}^{+}\) 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.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
J.D. Weinstein, R. de Carvalho, T. Guillet, B. Friedrich, J.M. Doyle, Nature 395, 148 (1998)
H.L. Bethlem, G. Berden, G. Meijer, Phys. Rev. Lett. 83, 1558 (1999)
A. Fioretti, D. Comparat, A. Crubellier, O. Dulieu, F. Masnou-Seeuws, P. Pillet, Phys. Rev. Lett. 80, 4402 (1998)
A.N. Nikolov, E.E. Eyler, X.T. Wang, H. Wang, W.C. Stwalley, P.L. Gould, Phys. Rev. Lett. 82, 703 (1999)
C. Gabbanini, A. Fioretti, A. Lucchesini, S. Gozzini, M. Mazzoni, Phys. Rev. Lett. 84, 2814 (2000)
F.K. Fatemi, K.M. Jones, P.D. Lett, E. Tiesinga, Phys. Rev. A 66, 053401 (2002)
A.J. Kerman, J.M. Sage, S. Sainis, T. Bergeman, D. DeMille, Phys. Rev. Lett. 92, 033004 (2004)
D. Wang, J. Qi, M.F. Stone, O. Nikolayeva, H. Wang, B. Hattaway, S.D. Gensemer, P.L. Gould, E.E. Eyler, W.C. Stwalley, Phys. Rev. Lett. 93, 243005 (2004)
T. Weber, J. Herbig, M. Mark, H.C. Nagerl, R. Grimm, Science 299, 232 (2003)
C.A. Regal, C. Ticknor, J.L. Bohn, D.S. Jin, Nature 424, 47 (2003)
G. Pichler, S. Milosevic, D. Veza, R. Beuc, J. Phys. B 16, 4619 (1983)
F.R. Bruhl, R.A. Miron, W.E. Ernst, J. Chem. Phys. 115, 10275 (2001)
C.M. Dion, O. Dulieu, D. Comparat, W. de Souza Melo, N. Vanhaecke, P. Pillet, R. Beuc, S. Milosevic, G. Pichler, Eur. Phys. J. D 18, 365 (2002)
C.M. Dion, C. Drag, O. Dulieu, B. Laburthe Tolra, F. Masnou-Seeuws, P. Pillet, Phys. Rev. Lett. 86, 2253 (2001)
Y. Huang, J. Qi, H.K. Pechkis, D. Wang, E.E. Eyler, P.L. Gould, W.C. Stwalley, J. Phys. B (to be published)
A. Fioretti, C. Amiot, C.M. Dion, O. Dulieu, M. Mazzoni, G. Smirne, C. Gabbanini, Eur. Phys. J. D 15, 189 (2001)
M. Aymar, O. Dulieu, J. Chem. Phys. 122, 204302 (2005)
A. Derevianko, W.R. Johnson, M.S. Safronova, J.F. Babb, Phys. Rev. Lett. 82, 3589 (1999)
S.G. Porsev, A. Derevianko, J. Chem. Phys. 119, 844 (2003)
A.R. Allouche, M. Aubert-Frécon, private communication
J.L. Roberts, N.R. Claussen, J.P. Burke, C.H. Greene, E.A. Cornell, C.E. Wieman, Phys. Rev. Lett. 81, 5109 (1998)
N. Vanhaecke, W. de Souza Melo, B.L. Tolra, D. Comparat, P. Pillet, Phys. Rev. Lett. 89, 063001 (2002)
D. Wang, J. Qi, M.F. Stone, O. Nikolayeva, B. Hattaway, S.D. Gensemer, H. Wang, W.T. Zemke, P.L. Gould, E.E. Eyler, W.C. Stwalley, Eur. Phys. J. D 31, 165 (2004)
A. Fioretti, J. Lozeille, C.A. Massa, M.C. Gabbanini, Opt. Commun. 243, 203 (2004)
Author information
Authors and Affiliations
Corresponding author
Electronic supplementary material
Rights and permissions
About this article
Cite this article
Lozeille, J., Fioretti, A., Gabbanini, C. et al. Detection by two-photon ionization and magnetic trapping of cold Rb2 triplet state molecules. Eur. Phys. J. D 39, 261–269 (2006). https://doi.org/10.1140/epjd/e2006-00084-4
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1140/epjd/e2006-00084-4