[1] Univ Paris 06, LPMAA, CNRS UMR 7092, F-75252 Paris 05, France
[2] Observ Paris, F-92195 Meudon, France
[3] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA
[4] Univ Nevada, Las Vegas, NV 89154 USA
[5] Observ Paris, LERMA, CNRS UMR 8112, F-92195 Meudon, France
[6] UJF Grenoble 1, CNRS INSU, IPAG, UMR 5274, F-38041 Grenoble, France
[7] CAB INTA CSIC, Madrid 28850, Spain
[8] Univ Havre, Lab Ondes & Milieux Complexes, CNRS UMR 6294, F-76058 Le Havre, France
[9] Univ Durham, Dept Phys, Durham DH1 3LE, England
[10] UMR CNRS 6213, Inst UTINAM, F-25010 Besancon, France
[11] Univ Bordeaux 1, Inst Sci Mol, CNRS UMR 5255, F-33405 Talence, France
[12] Grand Valley State Univ, Dept Chem, Allendale, MI 49401 USA
[13] Univ Warsaw, Dept Chem, Quantum Chem Lab, PL-02093 Warsaw, Poland
[14] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA
[15] Observ Paris, LUTH, F-92195 Meudon, France
[16] Univ Cologne, Inst Phys 1, D-50937 Cologne, Germany
[17] Univ Georgia, Depart Phys & Astron, Athens, GA 30602 USA
[18] Univ Georgia, Ctr Simulat Phys, Athens, GA 30602 USA
[19] UCL, Dept Phys & Astron, London WC1E 6BT, England