Throughput of the composite infrared spectrometer (CIRS) mid-infrared (MIR) channel for the Cassini mission to Saturn

1998 ◽  
Author(s):  
John G. Hagopian ◽  
Patricia A. Losch ◽  
Kenneth P. Stewart ◽  
Donald E. Jennings ◽  
Anthony J. Martino
Keyword(s):  
Mid Infrared ◽  
Cassini Mission ◽  
Infrared Spectrometer

Low-Frequency Photoacoustic Spectroscopy of Solids

1988 ◽  
Vol 42 (2) ◽  
pp. 289-292 ◽  
Author(s):  
J. C. Donini ◽  
K. H. Michaelian
Keyword(s):  
Fourier Transform ◽  
Carbon Black ◽  
Low Frequency ◽  
Far Infrared ◽  
Research Quality ◽  
Signal To Noise ◽  
Single Spectrum ◽  
Mid Infrared ◽  
Infrared Spectrometer ◽  
Computational Procedures

Research-quality far-infrared photoacoustic (PA) spectra are obtainable with a Fourier transform infrared spectrometer, the only changes with respect to conventional mid-infrared PA spectroscopy being the use of (1) a caesium iodide or polyethylene window on the PA cell, and (2) a mylar beamsplitter. Far-infrared PA spectra of several solids (bentonite, Fe+3-bentonite, and asbestos), in addition to the PA reference carbon black, have been recorded in this way. In order to improve signal-to-noise ratios in one of the spectra, we recorded ten interferograms under identical conditions; it was found that the average of the ten individually calculated spectra displays less noise and fewer spurious features than the spectrum obtained by first averaging the interferograms and then calculating a single spectrum. The results of this investigation demonstrate the feasibility of far-infrared PA spectroscopy, and illustrate that both experimental and computational procedures should be optimized in order to obtain the most satisfactory spectra.

Photovoltaic HgCdTe linear arrays for the composite infrared spectrometer of the CASSINI mission

1994 ◽  
Author(s):  
Louis Rodriguez ◽  
J. Le Pennec ◽  
Philippe Bouchut ◽  
Stephane Guillot ◽  
Jean-Louis Pornin ◽  
...  
Keyword(s):  
Linear Arrays ◽  
Cassini Mission ◽  
Infrared Spectrometer

Mid-Infrared Spectrometer on the Infrared Telescope in Space

1993 ◽  
Author(s):  
Thomas L. Roellig ◽  
Takashi Onaka ◽  
Thomas J. McMahon ◽  
Toshihiko Tanabe
Keyword(s):  
Mid Infrared ◽  
Infrared Telescope ◽  
Infrared Spectrometer

Broadband static Fourier transform mid-infrared spectrometer

2019 ◽  
Vol 58 (13) ◽  
pp. 3393 ◽  
Author(s):  
Michael H. Köhler ◽  
Stefan S. Naßl ◽  
Patrick Kienle ◽  
Xingchen Dong ◽  
Alexander W. Koch
Keyword(s):  
Fourier Transform ◽  
Mid Infrared ◽  
Infrared Spectrometer

scholarly journals Mid-infrared spectroscopy of Uranus from the Spitzer infrared spectrometer: 2. Determination of the mean composition of the upper troposphere and stratosphere

Icarus ◽  
2014 ◽  
Vol 243 ◽  
pp. 471-493 ◽  
Author(s):  
Glenn S. Orton ◽  
Julianne I. Moses ◽  
Leigh N. Fletcher ◽  
Amy K. Mainzer ◽  
Dean Hines ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Mid Infrared ◽  
Mid Infrared Spectroscopy ◽  
Upper Troposphere ◽  
Infrared Spectrometer ◽  
The Mean

scholarly journals The mid-infrared spectral characteristics of blazars

2014 ◽  
Vol 10 (S313) ◽  
pp. 93-94
Author(s):  
Howard A. Smith ◽  
F. Massaro ◽  
R. D'Abrusco ◽  
A. Paggi ◽  
P. Cowperthwaite ◽  
...  
Keyword(s):  
Large Fraction ◽  
Spectral Characteristics ◽  
Continuum Emission ◽  
Spectral Features ◽  
Mid Infrared ◽  
Infrared Spectral ◽  
Infrared Spectrometer ◽  
Γ Ray ◽  
Followup Studies ◽  
The Continuum

AbstractWe previously reported discovering that blazars have distinctive infrared colors as seen in the WISE mission. Of particular note are γ-ray blazars, the locus of whose colors roughly overlaps with QSOs contours but which is more tightly delimited and bluer than ULIRGs and Seyferts. Since a large fraction of γ-ray sources are unassociated with any point source, but are expected to be blazars, identifying a WISE-candidate blazar in the γ-ray source field enables efficient followup studies. In an effort to better understand why blazars have these colors, we reduced and analyzed Spitzer Infrared Spectrometer (IRS) measurements on 73 blazars of varying types, some at several epochs. These spectra can be used to study the continuum emission (non-thermal), and search for atomic or other spectral features.

scholarly journals MIRSI: a Mid-InfraRed Spectrometer and Imager

2003 ◽  
Author(s):  
Lynne K. Deutsch ◽  
Joseph L. Hora ◽  
Joseph D. Adams ◽  
Marc Kassis
Keyword(s):  
Mid Infrared ◽  
Infrared Spectrometer

Near- versus Mid-Infrared Diffuse Reflectance Spectroscopy for the Quantitative Determination of the Composition of Forages and By-Products

1994 ◽  
Vol 2 (1) ◽  
pp. 49-57 ◽  
Author(s):  
James B. Reeves
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Diffuse Reflectance ◽  
Near Infrared ◽  
Reflectance Spectroscopy ◽  
In Vitro Digestibility ◽  
Mid Infrared ◽  
Infrared Spectrometer ◽  
By Products

The objective of this work was to explore the relative value of near- and mid-infrared diffused reflectance spectroscopy in determining the composition of forages and by-products. Sixty-seven samples consisting of 15 alfalfa, 16 tall fescue and 15 orchard grass hays, 10 corn stovers and 11 wheat straws at various stages of maturity were examined by diffuse reflectance using a scanning monochromator (1100–2500 nm), a Fourier near infrared spectrometer (10,000–4000 cm−1, 4 and 16 cm−1 resolution, neat and 5% sample in KBr) and a Fourier mid-infrared spectrometer (4000–400 cm−1, 4 and 16 cm−1 resolution, neat and 5% sample in KBr). Samples were analysed chemically and spectroscopically for fibres, in vitro digestibility, crude protein, nitrobenzene oxidation products and various measures of lignin content. The results showed that diffuse mid-infrared reflectance spectroscopy can perform as well as, and sometimes better than, diffuse near infrared spectroscopy in determining the composition of forages and by-products. In addition, Fourier near infrared spectroscopy did not perform as well as either near infrared using a scanning monochromator or the Fourier mid-infrared spectrometer. Finally, diluting samples with KBr was not beneficial for either Fourier based determinations. Additional work with more diverse data sets and various Fourier instrument configurations will be needed to further define the limits and usefulness of Fourier transform near- and mid-infrared spectroscopy in the determination of forage and by-product composition.

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