Diffuse bands of alkali dimers : Detection of ultracold molecules (CROSBI ID 474248)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Pichler, Goran ; Ban, Ticijana ; Skenderović, Hrvoje ; Beuc, Robert
engleski
Diffuse bands of alkali dimers : Detection of ultracold molecules
In recent few years many efforts have been performed in order to create ultracold molecules and to detect them in their lowest stable states. In the case of alkali dimers ultracold molecules can be formed either in the lowest triplet state, a 3Su+ [1] or in the ground state, X 1Sg+ [2]. Beside Cs2 and K2 ultracold molecules, quite recently, ultracold Rb2 molecules have been detected in their lowest triplet state [3]. Detection scheme of the ultracold triplet alkali molecules is performed via two-photon ionization leading to Cs2+ or Rb2+. The first step in this ionization process involves absorption of the photons within the well-known diffuse bands of alkali dimers [4]. We have performed a new set of absorption measurements using all sapphire cell filled with potassium, rubidium and cesium at very high temperatures in order to study K2, Rb2 and Cs2 diffuse bands at 575, 600 and 710 nm in more details. Using recent ab initio potential curves calculations we shall discuss the origin of the fine structure splitting of these diffuse bands and some additional structures found at very high rubidium particle densities. __________________________________ [1] A. Fioretti, D. Comparat, A. Crubellier, O. Dulieu, F. Masnou-Seeuws, and P. Pillet, Phys.Rev.Lett. 80 (1998) 4402. ___________________________________________ [2] A. N. Nikolov, E. E. Eyler, X. T. Wang, J. Li, H. Wang, W.C. Stwalley, and P. L. Gould, Phys.Rev.Lett. 82 (1999) 703. _____________________________________________ [3] C. Gabbanini, A. Fioretti, A. Lucchesini, S. Gozzini and M. Mazzoni, Phys.Rev.Lett. 84 (2000) 2814 ___________________________________________________________ [4] G. Pichler, S. Milosevic, D. Veza and R. Beuc, J.Phys.B:At.Mol.Phys. 16 (1983) 4619.
diffuse bands; alkali dimers; ultracold molecules
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Podaci o prilogu
37-37-x.
2000.
objavljeno
Podaci o matičnoj publikaciji
Book of Abstracts / The Brijuni Conference VII
Bosanac, Danko S. ; Došlić, Nađa
Zagreb: Institut Ruđer Bošković
Podaci o skupu
The Brijuni Conference VII
poster
28.08.2000-01.09.2000
Brijuni, Hrvatska