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HIGH RESOLUTION FOURIER SPECTROSCOPY OF THE LASER EXCITED $Cs_{2}$ FLUORESCENCE SPECTRUM: FIVE NEW ELECTRONIC STATES

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/16632

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Title: HIGH RESOLUTION FOURIER SPECTROSCOPY OF THE LASER EXCITED $Cs_{2}$ FLUORESCENCE SPECTRUM: FIVE NEW ELECTRONIC STATES
Creators: Crepin, C.; Vergès, J.; Amiot, C.
Issue Date: 1984
Abstract: The fluorescence of $Cs_{2}$ was observed inside a heat pipe oven which was operated at $sim 350^{\circ}C$. The spectra were recorded at high resolution $(0.005 cm^{-1})$ with a Fourier transform Interferometer. The fluorescence excited by the $Ar^{+}$ and $Kr^{+}$ lasers was observed mainly in the $4 300cm^{-1}, 6 500cm^{-1}, 8 500cm^{-1}$ spectral regions and also near the laser lines. The molecular constants of the pumped $E {^{1}}\Pi_{u}^{+}$ state where deduced from an analysis of the rotational relaxations and also thanks to the great number of pumped rotational levels. Molecular constants for three gerade states: $(1) {^{1}}\Pi_{g}, (2) {^{1}}\Sigma^{+}_{g}$ and $(3) {^{1}}\Sigma^{+}_{g}$ were derived from the study of the fluorescence spectra [1]. When using the ring dye laser, very high vibrational levels of the (2) ${^{1}}\Sigma^{+}_{g}$ state were observed. Triplets in the $4 200 cm^{-1}$ region were assigned to the fluorescence from the $D {^{1}}\Sigma^{+}_{u}$ state to the $1_{g}$ component of the lowest ${^{3}}\Sigma^{+}_{g}$ state.
URI: http://hdl.handle.net/1811/16632
Other Identifiers: 1984-ME-7
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