Abstract
A short review is given about infrared emission spectroscopy of hot carbon vapors and plasmas obtained using Fourier transform infrared emission and laser induced breakdown LIB spectroscopies in the mid-infrared range. Labor-atory FTIR emission spectra contain vibrational bands from fullerenes C60, C70 whereas laboratory mid-infrared LIB spectra show bands that belong to mostly unidentified carbon molecules and clusters. Both kinds of spectra are com-pared to spectral results from infrared astronomy. The spectra are discussed with a view for possible applications in carbon nanostructure research and in infrared astronomy. Possible extensions for laser induced breakdown (plasma) spectroscopy are suggested.
Highlights
Even before the discovery of fullerenes [1], and their macroscopic production [2], interest arose in finding carbon molecules in interstellar medium, in carbon rich stars and in other cosmic sources
FTIR spectra were taken on the National Solar Observatory Fourier-transform spectrometer at Kitt Peak, Arizona, USA, while midinfrared LIB spectra at Hampton University, Department of Physics, Hampton, Virginia, USA
One method is to use low temperature rare gas matrix isolation that provides absorption spectra of solid phase molecules, another method is to generate carbon vapors and study their infrared emission from gas-phase molecules. Another approach is the application of laser-induced plasma breakdown emission spectroscopy (LIBS) to study carbon plasmas
Summary
INFRARED EMISSION SPECTROSCOPY OF CARBON VAPORS AND PLASMAS● – A SHORT OVERVIEW – László Nemes. A short review is given about infrared emission spectroscopy of hot carbon vapors and plasmas obtained using Fourier transform infrared emission and laser induced breakdown LIB spectroscopies in the mid-infrared range. Laboratory FTIR emission spectra contain vibrational bands from fullerenes C60, C70, whereas laboratory mid-infrared LIB spectra show bands that belong to mostly unidentified carbon molecules and clusters. Both kinds of spectra are compared to spectral results from infrared astronomy. The spectra are discussed with a view for possible applications in carbon nanostructure research and in infrared astronomy. Possible extensions for laser induced breakdown (plasma) spectroscopy are suggested
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