Topic
Fourier transform spectroscopy
About: Fourier transform spectroscopy is a research topic. Over the lifetime, 5418 publications have been published within this topic receiving 134133 citations.
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TL;DR: In this article, the experimental considerations necessary to effect successful recording of in situ vibrational spectroscopy at the electrode-solution interface are described, and the Fourier transform infrared spectrometer is used.
78 citations
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TL;DR: The feasibility of applying the methods of factor analysis to Fourier transform infrared spectra is examined in this article, where the method is designed to determine the number of components contributing to a spectral region.
Abstract: The feasibility of applying the methods of factor analysis to Fourier transform infrared spectra is examined. The method is designed to determine the number of components contributing to a spectral region. The technique has been applied to a model system consisting of solutions of p-, o-, and m-xylenes. The method has also been used for calculating the number of independently absorbing species in several polymer systems. Spectral requirements and the general applicability of factor analysis are also discussed.
78 citations
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15 Jun 2000TL;DR: In this article, measurements of vibration-to-vibration (V-V) energy transfer rates for CO-CO using time-resolved step-scan Fourier transform infrared spectroscopy of optically pumped carbon monoxide were discussed.
Abstract: The paper discusses measurements of vibration-to-vibration (V–V) energy transfer rates for CO–CO using time-resolved step-scan Fourier transform infrared spectroscopy of optically pumped carbon monoxide. In the experiments, time evolution of all vibrational states of carbon monoxide excited by a CO laser and populated by V–V processes (up to v∼40) is monitored simultaneously. The V–V rates are inferred from these data using a kinetic model that incorporates spatial power distribution of the focused laser beam, transport processes, and multi-quantum V–V processes. Although the model predictions agree well with the time-dependent step-scan relaxation data, there is variance between the model predictions and the up-pumping data, however. Comparison of calculations using two different sets of V–V rates with experimental spectra showed that the use of the semi-empirical V–V rates of DeLeon and Rich provides better agreement with experiment. It is also shown that the multi-quantum V–V rates among high vibrational quantum numbers, calculated by Cacciatore and Billing, are substantially overpredicted. The results provide some new insight into nonequilibrium vibrational kinetics, and also demonstrate the capabilities of the step-scan Fourier transform spectroscopy for time-resolved studies of molecular energy transfer processes and validation of theoretical rate models.
78 citations
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TL;DR: The graphitic layered compound C6N9H3 as discussed by the authors was prepared by reaction between melamine and cyanuric chloride under high pressure-high temperature condition in a piston cylinder apparatus and characterised using SEM, powderX-ray diffraction, UV Raman and near-IR Fourier transform Raman spectroscopy with near IR excitation.
77 citations
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TL;DR: In this article, a new time-resolved Fourier transform spectrometer that is capable of 0.25 cm−1 spectral resolution and better than 10−7 s temporal resolution in the visible is reported.
Abstract: The development of a new time‐resolved Fourier transform spectrometer that is capable of 0.25 cm−1 spectral resolution and better than 10−7 s temporal resolution in the visible is reported. The time‐resolved capability of the spectrometer is achieved by coupling a step‐scan interferometer to a transient digitizer/laser system. The operation of the spectrometer is described in detail, and scattered light and laser‐induced fluorescence spectra from an I2 gas cell are presented to demonstrate the temporal and spectral resolution of the spectrometer.
77 citations