Experimental evidence for an isotopic effect in the formation of ultracold ground-state rubidium dimers
Anno: 2007
Autori: Fioretti A., Dulieu O., Gabbanini C.
Affiliazione autori: Istituto per i Processi Chimico-Fisici del CNR, Via Moruzzi 1, 56127 Pisa, Italy; Laboratoire Aimé Cotton, CNRS, Campus d
Abstract: We perform a comparative study of the formation of ultracold rubidium dimers in their ground state with both Rb-85 and Rb-87 isotopes. Ultracold rubidium molecules are created through photoassociation of ultracold atoms into rovibrational levels of the 0(u)(+)(5S(1/2) + 5P(1/2)) excited state, which interact through resonant coupling ( Dion et al 2001 Phys. Rev. Lett. 86 2253) with rovibrational levels of the 0(u)(+)(5S(1/2) + 5P(3/2)) excited state. The photoassociated levels decay by spontaneous emission down to rovibrational levels of the X-1 Sigma(+)(g) ground state. The resonant coupling is expected to enhance the formation of ultracold molecules in low-lying ground-state levels. By modelling the ionization spectrum of these ultracold molecules, we show that this coupling is larger for Rb-87(2) molecules than for Rb-85(2) molecules.
Giornale/Rivista: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
Volume: 40 (16) Da Pagina: 3283 A: 3293
Parole chiavi: cold molecules; laser cooling; spectroscopyDOI: 10.1088/0953-4075/40/16/009Citazioni: 14dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-04-28Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui