Overtone Transitions of Carbon Monoxide Via Laser Photoacoustic Spectroscopy PDF Download
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Author: Denise Laferte
Publisher:
ISBN:
Category :
Languages : en
Pages : 78
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Book Description
Author: Denise Laferte
Publisher:
ISBN:
Category :
Languages : en
Pages : 78
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Book Description
Author: Mauro F. Pereira
Publisher: Springer
ISBN: 9401785724
Category : Science
Languages : en
Pages : 201
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Book Description
The reader will find here a timely update on new THz sources and detection schemes as well as concrete applications to the detection of Explosives and CBRN. Included is a method to identify hidden RDX-based explosives (pure and plastic ones) in the frequency domain study by Fourier Transformation, which has been complemented by the demonstration of improvement of the quality of the images captured commercially available THz passive cameras. The presented examples show large potential for the detection of small hidden objects at long distances (6-10 m). Complementing the results in the short-wavelength range, laser spectroscopy with a mid-infrared, room temperature, continuous wave, DFB laser diode and high performance DFB QCL have been demonstrated to offer excellent enabling sensor technologies for environmental monitoring, medical diagnostics, industrial and security applications. From the new source point of view a number of systems have been presented - From superconductors to semiconductors, e.g. Detection of Terahertz Waves from Superconducting Bi2Sr2CaCu2O8+δ Intrinsic Josephson Junctions. The quest for a compact room temperature THz source and the recent advances in high power mid-IR QCLs lead to the development of a semiconductor THz source based on intracavity difference frequency generation. Furthermore, alternative electrically pumped THz sources based on the high emission efficiency predicted for polaritonic states in the ultra-strong coupling regime led to the demonstration of electroluminescent devices. Finally, antipolaritons in dispersive media were discussed and different aspects of the interaction of THz radiation with biomatter were presented.
Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 692
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Author: John W. Hrinishin
Publisher:
ISBN:
Category :
Languages : en
Pages : 98
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Book Description
The dye laser intracavity absorption spectra of carbon monoxide and its mixtures with oxygen and helium in a plasma have been studied in the optical region between 5790 A and 6080 A. The purpose was to investigate possible resonant energy transfer between carbon monoxide and oxygen. A radio frequency discharge was used to excite the carbon monoxide gas to the upper vibrational levels of its ground electronic state from which optical excitation was performed by the dye laser to higher energy levels. The transition bands of the Fourth Positive System were observed in the CO spectrum where the initial states were identified as v=26 to 46 of ground electronic state. Anomalous effects in line intensities in the CO spectrum taken at 1 Torr were observed when oxygen was added at partial pressures between 0.01 and 2 Torr.
Author: Markus W. Sigrist
Publisher: John Wiley & Sons
ISBN: 9780471558750
Category : Technology & Engineering
Languages : en
Pages : 564
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Book Description
Leading experts discuss the characteristics, advantages, limitations and future aspects of modern spectroscopic techniques for environmental analysis. Demonstrates how these methods can be applied to trace gas detection and assessment. Concentrates on the latest techniques--both laser and non-laser based--which offer advantages for air pollution and gas monitoring as opposed to more conventional methods. Numerous examples of applications illustrate the potential of the techniques backed up by cutting-edge information and representative data.
Author: Giel Berden
Publisher: John Wiley & Sons
ISBN: 9781444308242
Category : Science
Languages : en
Pages : 344
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Book Description
Cavity Ring-Down Spectroscopy: Techniques and Applications provides a practical overview of this valuable analytical tool, explaining the fundamental concepts and experimental methods, and illustrating important applications. Designed as both an introductory text and a reference source, this book is relevant for scientists unfamiliar with CRDS who are interested in using the technique in their research, as well as experienced users.
Author:
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ISBN:
Category :
Languages : en
Pages : 0
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Book Description
This report results from a contract tasking P.N. Lebedev Physical Institute as follows: The contractor will investigate the variation of specific input energy, gas density, gas temperature, pump pulse duration, and mixture on the operation of a CO laser operating on the first overtone. A comparison between the experimental and theoretical results will be made. In particular, laser output energy, efficiency, pulse duration and profile, and spectral content will be compared. All experimental and theoretical results will be presented in the final report with suggestions for improving the code and suggestions for further experiments.
Author:
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ISBN:
Category : Physics
Languages : en
Pages : 1180
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Author: S. George Philander
Publisher: SAGE
ISBN: 1412958784
Category : Nature
Languages : en
Pages : 545
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Book Description
This is a collection of approximately 750 articles exploring major topics related to global warming and climate change ranging geographically from the North Pole to the South Pole and thematically from social effects to scientific cause. It also covers industrial and economic factors, the role of societies and much more.
Author:
Publisher:
ISBN:
Category : Lasers
Languages : en
Pages : 800
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Book Description
