Laser induced fluorescence dispersed

Tunable visible and ultraviolet lasers were available well before tunable infrared and far-infrared lasers. There are many complexes that contain monomers with visible and near-UV spectra. The earliest experiments to give detailed dynamical infonnation on complexes were in fact those of Smalley et al [22], who observed laser-induced fluorescence (LIF) spectra of He-l2 complexes. They excited the complex in the I2 B <—A band, and were able to produce excited-state complexes containing 5-state I2 in a wide range of vibrational states. From line w idths and dispersed fluorescence spectra, they were able to study the rates and pathways of dissociation. Such work was subsequently extended to many other systems, including the rare gas-Cl2 systems, and has given quite detailed infonnation on potential energy surfaces [231. 

The laser-induced fluorescence (LJF) excitation and dispersed fluorescence spectra of the transition in the prototype germylene, GeH2, and its deuteriated derivative,... 

X-ray Fluorescence, XRF Laser Induced Fluorescence, LIF Scanning Electron Microscopy w/energy dispersive... 

C.M. Quintella, Y.N. Watanabe, A.M.V. Lima, M. Korn, M. Embirucu, A.P.S. Musse, Evaluation of transversal and longitudinal dispersion in a flow injection system by exploiting laser induced fluorescence influence of flow-cell positioning, Anal. Chim. Acta 523 (2004) 293. 

Figure 17. Laser excitation spectra (up arrows) and dispersed laser-induced fluorescence spectra (down arrows) of the B21.+-X2I.+ transition of SrOH. [Reprinted with permission from ref. 77. Copyright 1993 NRC Research Press.]...

Figure 13. Laser-induced fluorescence spectra of the CF3O radical (a) laser excitation spectrum b) dispersed fluorescence spectrum.

At this point it is relevant to note the terminology employed in this chapter the expression laser-induced fluorescence (LIF) is used as a general term describing any fluorescence that is excited using a laser. A fluorescence excitation spectrum shows fluorescence emission yield as a function of excitation wavelength that is, it is similar to an absorption spectrum when that absorption results in radiative emission. It is noted that some authors reserve LIF as a synonym for fluorescence excitation spectroscopy. Dispersed fluorescence refers to dispersion of the emitted fluorescence light into its component wavelengths, that is, production of an emission spectrum. 

This chapter is concerned with the following techniques in molecular laser spectroscopy (i) laser-Stark spectroscopy and electric field spectroscopy (ii) laser-Zeeman, or laser-magnetic-resonance spectroscopy (LMR) (iii) dispersed laser-induced fluorescence and (iv) double resonance spectroscopy. 

The dispersion of laser induced fluorescence has three main... 

SiF C2A —>B2E+ and SiCl B,2A —>B2E+ transitions have been studied by McKendrick and co-workers (Singleton and McKendrick, 1993, Watson and McKendrick, 1994) by selective laser excitation and dispersed fluorescence detection of the final levels. The final rotational level distributions are broad and smooth, reflecting the fact that these transitions are induced by collision-induced mixing of the electronic states. 

Garguillo, M. G., Thomas, D. H., Anex, D. S., and Rakestraw, D. J., Laser-induced dispersed fluorescence detection of polycyclic aromatic compounds in soil extracts separated by capillary electrochromatography, J. Chromatogr. A, 883, 231-248, 2000. 

A. Delon, R. lost, Laser-induced dispersed fluorescence spectroscopy of 107 vibronic levels ofN02 ranging from 12,0(X)to 17,6(X)cm . J. Chem. Phys. 114,331 (2001)... 

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