The irreducible Raman scattering tensor operator for the 32 crystallographic point groups and its application to the resonance and electronic Raman effect

1976 ◽  
Vol 63 (1) ◽  
pp. 1-22 ◽  
Author(s):  
Bernhard F. Gächter
Keyword(s):  
Raman Scattering ◽  
Raman Effect ◽  
Tensor Operator ◽  
Point Groups

Studies of nonlinear phenomena - I. Theory of the hyper Raman effect

1970 ◽  
Vol 318 (1535) ◽  
pp. 441-457 ◽  
Keyword(s):  
Raman Scattering ◽  
Density Matrix ◽  
Scattered Radiation ◽  
Raman Effect ◽  
Theoretical Treatment ◽  
Nonlinear Phenomena ◽  
Scattering Mechanism

A detailed theoretical treatment of the hyper Raman effect is presented. Using the density matrix treatment we derive general formulae which give information on the frequencies of the scattered radiation, the scattering mechanism and resonance processes. A hyperpolarizability theory analogous to the Placzek polarizability theory is developed and the conditions under which it is valid are established. The enhancement of intensity of hyper Raman scattering through resonance processes is discussed.

A Laboratory Study for a Resonance Raman Lidar System

1976 ◽  
Vol 30 (5) ◽  
pp. 528-531 ◽  
Author(s):  
J. G. Hochenbleicher ◽  
W. Kiefer ◽  
J. Brandmüller
Keyword(s):  
Raman Scattering ◽  
Laboratory Study ◽  
Laser Light ◽  
Raman Effect ◽  
Resonance Raman ◽  
Air Pollutant ◽  
Raman Lidar ◽  
Resonance Raman Scattering ◽  
Lidar System ◽  
Remote Analysis

Results of a laboratory study for the applicability of the resonance Raman effect for remote analysis of air pollutant molecules are presented. It was found that the influence of the absorption of the exciting laser light as well as of the scattered resonance Raman light by the scattering gas can reduce the observed resonance signal to normal Raman scattering levels. The laboratory detection limit for continuum resonance Raman scattering of iodine was found to be of the order of 30 ppb.

Analysis of Aerosol Particles by Resonance Raman Scattering Technique

1992 ◽  
Vol 46 (1) ◽  
pp. 159-162 ◽  
Author(s):  
K. H. Fung ◽  
I. N. Tang
Keyword(s):  
Raman Scattering ◽  
Raman Effect ◽  
Resonance Condition ◽  
Aerosol Particles ◽  
Resonance Raman ◽  
Resonance Raman Scattering ◽  
Analytical Technique ◽  
Scattering Technique ◽  
Ion Laser ◽  
Argon Ion

An analytical technique for aerosol samples which utilizes the resonance Raman effect is described. The aerosol particles were generated at 50 kHz by a vibrating orifice. The nominal particle size was 45 µm in diameter. The visible lines (4579, 4765, 4880, and 5145 Å) of a continuous argon-ion laser were used as the excitation source. Within the coverage of the laser wavelengths, effects of pre-resonance, resonance, and post-resonance Raman scattering were studied. Under the resonance condition, the enhancement of p-nitrosodimethylaniline is 5.5 × 104 when compared to that of nitrate ions. The corresponding concentration of detection limit is 10−6 molar.

scholarly journals The application of surface enhanced Raman scattering to the detection of asphaltic petroleum in sediment extracts: deconvolving three component-mixtures using look-up tables of entire surface enhanced Raman spectra

2019 ◽  
Vol 11 (46) ◽  
pp. 5846-5856 ◽  
Author(s):  
Stephen A. Bowden ◽  
Colin W. Taylor
Keyword(s):  
Raman Scattering ◽  
Raman Spectra ◽  
Raman Effect ◽  
Surface Enhanced Raman Scattering ◽  
Entire Surface ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

The detection of asphaltic petroleum by surface enhanced Raman scattering (SERS) is uncomplicated, except in instances where the petroleum has been mixed with other components that also exhibit a strong Raman effect.

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