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Author: Ali Javan Publisher: ISBN: Category : Languages : en Pages : 39
Book Description
The purpose of this work was to develop a highly stable spin flip Raman laser that could be tuned through the 5 micron region in order to study water vapor absorption lines. The pressure broadening coefficients for various buffer gases when added to water was measured with this system. A general technique was devised to measure the shape of absorption lines well out onto the wings to determine if there were any deviation from a Lorentzian lineshape. In addition, theoretical work was done on the interaction of a radiation field with molecules undergoing a collision. A formulation was developed and used to treat the case of a collision between two noble gases.
Author: Ali Javan Publisher: ISBN: Category : Languages : en Pages : 39
Book Description
The purpose of this work was to develop a highly stable spin flip Raman laser that could be tuned through the 5 micron region in order to study water vapor absorption lines. The pressure broadening coefficients for various buffer gases when added to water was measured with this system. A general technique was devised to measure the shape of absorption lines well out onto the wings to determine if there were any deviation from a Lorentzian lineshape. In addition, theoretical work was done on the interaction of a radiation field with molecules undergoing a collision. A formulation was developed and used to treat the case of a collision between two noble gases.
Author: Ali Javan Publisher: ISBN: Category : Languages : en Pages : 74
Book Description
Progress has been made in the following area: (1) Development of a tunable 5 micrometer spin-flip Raman laser and application to precision spectroscopy of H2O; (2) Studies of wings of water vapor lines; (3) Other spectroscopic applications of the spin-flip Raman laser; (4) Development of a tunable 5 micrometer pulsed laser; (5) Spectroscopy of D2O using an acoustical modulator for frequency tuning; (6) Velocity dependence of collision processes in NH3; (7) Theoretical formulation of absorption far from line center - collision induced absorption in rare gas mixture.
Author: Robert Paul D'Entremont Publisher: ISBN: Category : Attenuation (Physics) Languages : en Pages : 50
Book Description
The Real-Time Nephanalysis (RTNE PH) generates real-time global analysis of cloud extent, base, height, and type. The RTNE PH makes extensive use of satellite data that are measured in the 10-12 micron infrared (IR) window for thermal mapping of clouds and the earth's surface both day and night. Water vapor absorption effects are significant in such data, especially for high viewing angles and tropical atmospheres where water vapor concentrations are generally high. Water vapor attenuates the emitted ground radiance, reducing its magnitude and with it the apparent temperature of the surface being viewed. Currently, the RTNEPH takes into account such attenuation losses using lookup tables that are functions of viewing geometry, time of day, type of background, and the like. However, these corrections have limited value and leave room for significant improvement. This report outlines and presents two new techniques that are expected to enhance the attenuation correction capabilities of the RTNEPH, multivariate polynomial regression (the Weinreb technique) and the correlated K method.
Author: Jerry Workman Jr. Publisher: CRC Press ISBN: 1420018310 Category : Science Languages : en Pages : 346
Book Description
Containing focused, comprehensive coverage, Practical Guide to Interpretive Near-Infrared Spectroscopy gives you the tools necessary to interpret NIR spectra. The authors present extensive tables, charts, and figures with NIR absorption band assignments and structural information for a broad range of functional groups, organic compounds, and
Author: R. F. Calfee Publisher: ISBN: Category : Absorption spectra Languages : en Pages : 32
Book Description
We report the quantitative absorption coefficients of water vapor in a format suitable for calculation of water vapor absorption spectra characterized by instrumental bandpasses of 1 cm−1 or greater in the 670 to 1450 cm−1 region. The coefficients are derived from individual line parameters of H2O and represent a useful way of reducing line parameter data to a practical volume of information for 1 cm−1 resolution spectra of the troposphere. Transmission spectra for three water vapor concentrations show typical applications of the absorption coefficient tables. The application of the data is restricted to conditions within 10% of 1 atmosphere pressure and a temperature of 296 K if a transmission accuracy of 2% is to be maintained.
Author: Ali Javan
Author: Ali Javan
Author: Ali Javan
Author: 
Author: Larry Anderson Pugh
Author: Robert Paul D'Entremont
Author: William Warner Sleator
Author: Robert Morgan Chapman
Author: Jerry Workman Jr.
Author: R. F. Calfee
Author: