dc.creator Allard, Olivier en_US dc.creator Auböck, Gerald en_US dc.creator Nagl, Johann en_US dc.creator Callegari, C. en_US dc.creator Ernst, Wolfgang E. en_US dc.date.accessioned 2008-01-12T13:28:07Z dc.date.available 2008-01-12T13:28:07Z dc.date.issued 2006 en_US dc.identifier 2006-TF-13 en_US dc.identifier.uri http://hdl.handle.net/1811/31127 dc.description Author Institution: Institute of Experimental Physics, TU Graz, Petersgasse 16, 8010 Graz, Austria/EU en_US dc.description.abstract We measured laser induced fluorescence and emission spectra of the $1\,^{3}\Sigma^{+}_{u}(0^{-}_{u},1_{u})$--$1\,^{3}\Pi_{g}(0^{+}_{g},0^{-}_{g},1_{g},2_{g})$ transition of K$_{2}$, Rb$_{2}$, and the corresponding $1\,^{3}\Sigma^{+}(0^{-},1)$--$2\,^{3}\Pi(0^{+},0^{-},1,2)$ transition of KRb, on the surface of superfluid helium droplets. The spectra are relatively well explained, quantitatively, by simulations making use of the gas phase potentials.}$: A. R. Allouche. Potential energy curves available at lasim.univ-lyon1.fr/allouche/pec.html}}$, KRb: M. Aymar and O. Dulieu private communication} For an exact agreement, however, one needs to assume: (1) that the $1\leftarrow0^{-}$ excitation is strongly suppressed, (2) that the spin-orbit coupling constant is increased (K$_{2}$, KRb), and (3) an adjustable broadening factor. (1) points to a yet-unexplained lack of population of the $0^{-}$ state after dimer formation, (2) and (3) can be justified qualitatively as due to the presence of the droplet, but are difficult to predict quantitatively. Data analysis is in progress. Emission spectra, sharp, confirm that the molecules emit from the gas phase after having been ejected from the droplet; they can be used to test existing potential energy surfaces. We are in the process of acquiring new data and improving our analysis of vibrational populations in the excited state.}$OSU Symposium on Molecular Spectroscopy, 2005} en_US dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title LASER-INDUCED-FLUORESCENCE EXCITATION AND EMISSION SPECTRA OF THE$1\,^{3}\Sigma^{+}_{u}$--$1\,^{3}\Pi_{g}$($1\,^{3}\Sigma^{+}$--$2\,^{3}\Pi$) TRANSITION IN {K}$_{2}$, {Rb}$_{2}\$ KRb ON THE SURFACE OF SUPERFLUID HELIUM DROPLETS en_US dc.type article en_US
﻿