Spectroscopy of Rb₂ dimers in solid ⁴He

Moroshkin, Peter; Hofer, Adrian; Ulzega, Simone; Weis, Antoine

doi:10.1103/PhysRevA.74.032504

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Journal article

Spectroscopy of Rb₂ dimers in solid ⁴He

Moroshkin, Peter Department of Physics, University of Fribourg, Switzerland
Hofer, Adrian Department of Physics, University of Fribourg, Switzerland
Ulzega, Simone Department of Physics, University of Fribourg, Switzerland
Weis, Antoine Department of Physics, University of Fribourg, Switzerland

07.09.2006

Published in:

Physical Review A. - 2006, vol. 74, p. 032504

English We present experimental and theoretical studies of the absorption, emission, and photodissociation spectra of Rb₂ molecules in solid helium. We have identified 11 absorption bands of Rb₂. All laser-excited molecular states are quenched by the interaction with the He matrix. The quenching results in efficient population of a metastable (1) ³π_u state, which emits fluorescence at 1042 nm. In order to explain the fluorescence at the forbidden transition and its time dependence we propose a new molecular exciplex Rb₂(³π_u)He₂. We have also found evidence for the formation of diatomic bubble states following photodissociation of Rb₂.

Faculty

Faculté des sciences et de médecine

Department

Département de Physique

Language