Mid-infrared (2.1-25 um) spectra of minerals



Publisher: Dept. of the Interior, U.S. Geological Survey, Publisher: [Books and Open-File Reports Section, distributor in [Denver, Colo.?]

Written in English
Published: Downloads: 775
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Subjects:

  • Mineralogy.,
  • Minerals.

Edition Notes

Includes bibliographical references (p. 18-19).

Statementby John W. Salisbury, Louis S. Walter, Norma Vergo.
SeriesOpen-file report -- 87-263., U.S. Geological Survey open-file report -- 87-263.
ContributionsSalisbury, John W., Walter, L. S., Vergo, Norma., Geological Survey (U.S.)
The Physical Object
FormatMicroform
Pagination8 microfiches
ID Numbers
Open LibraryOL14661710M

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Mid-infrared (2.1-25 um) spectra of minerals Download PDF EPUB FB2

The vibrational frequencies of most molecules correspond to the frequencies of infrared light. Typically, the technique is used to study organic compounds using light radiation from – cm −1, the mid-infrared. A spectrum of all the frequencies of absorption in a sample is recorded.

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Infrared spectroscopy exploits the fact that molecules absorb frequencies that are characteristic of their the5thsense.com absorptions occur at resonant frequencies, i.e.

the frequency of the absorbed radiation matches the vibrational the5thsense.com energies are affected by the shape of the molecular potential energy surfaces, the masses of the atoms, and the associated vibronic coupling.

Professor Anthony Krier is the head of the Condensed Matter Division of the Physics Department at Lancaster University, UK. His research is in the optoelectronic properties of semiconductor and polymer materials and the fabrication of diode and laser devices emitting in the 2–10 µm (mid-infrared) range.

5 Infrared radiation is largely thermal energy. It induces stronger molecular vibrations in covalent bonds, which can be viewed as springs holding together two masses, or atoms. Graphics source: Wade, Jr., L.G. Organic Chemistry, 5th ed. Pearson Education Inc., Specific bonds respond to (absorb) specific frequencies VIBRATIONAL MODES.

In recent years, Mid-Infrared spectroscopy has garnered lot of attention from researchers and industries due to the availability of industrial grade room temperature Intra-band and Quantum Cascade Lasers.

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This enabled widespread Author: Chayan Mitra. J.M. Chalmers, in Reference Module in Chemistry, Molecular Sciences and Chemical Engineering, Abstract. Mid-infrared spectroscopy is a very important and widely used sample characterisation and analytical technique, whether the sample is in the form of a gas, a liquid, paste-like, or solid.

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The scope of this chapter is rather to discuss recent developments of mid-infrared laser sources. Terahertz (THz) and Mid-Infrared (MIR) radiation (TERA-MIR) can be transmitted through nearly any material without causing biological harm.

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Pereira. Coherent sources of mid-infrared (mid-IR) radiation are of great interest for a wide range of scienti?c and technological applications from spectroscopy and frequency metrology to information technology, industrial process control, pho- chemistry, photobiology and photomedicine.

The mid-IR. A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Infrared Spectroscopy 1. Introduction The light our eyes see is but a small part of a broad spectrum of electromagnetic radiation.

On the immediate high energy side of the visible spectrum lies the ultraviolet, and on the low energy side is the infrared. The portion of the infrared region most useful for analysis.

Feb 26,  · Laser-based Mid-infrared Sources and Applications offers a guide to the most advanced techniques for generating coherent light in the mid-infrared region of the spectrum.

The book explains a range of approaches for generating coherent light in the mid-infrared range such as solid-state lasers, fiber lasers, semiconductor lasers and nonlinear Author: Konstantin L. Vodopyanov. Toward On-Chip Mid-Infrared Sensors.

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The physics of mid-infrared semiconductor materials and heterostructures. Part Two -- Light sources. Mid-infrared light-emitting diodes. Interband mid-infrared lasers. Quantum cascade lasers.

High-brightness quantum cascade lasers. Mid-infrared frequency conversion in quasiphase matched semiconductors. Part Three. We report the first planar waveguides made from mercury–cadmium–telluride (MCT)—a material to date exclusively used for mid-infrared (MIR) detector elements—serving as on-chip MIR evanescent field transducers in combination with tunable quantum cascade lasers (tQCLs) emitting in the spectral regime of – μm.

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The book describes the most advanced techniques for generating coherent light in the mid-infrared region of the spectrum.

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For Zoom; 1.) Enter the desired X axis range (e.g.,) 2.) Check here for automatic Y scaling 3.) Press here to zoom. Coherent sources of mid-infrared (mid-IR) radiation are of great interest for a wide range of scienti?c and technological applications from spectroscopy and frequency metrology to information technology, industrial process control, pho- chemistry, photobiology and photomedicine.

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Shaw, Jas Sanghera, U.S. Naval Research Laboratory (United States). Abstract of Paper at SPIE Defense+Commercial Sensing Conference.This book provides practical information on the use of infrared (IR) spectroscopy for the analysis of materials found in cultural objects.

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