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Author: Gennadiy Sergeevich Evtushenko
Publisher:
ISBN: 9781536135695
Category : Science
Languages : en
Pages : 248
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Book Description
This book presents new instruments and methods for studying the dynamics of fast processes. The manuscript consists of two parts: Part I discusses the use of high speed metal vapor brightness amplifiers for object and process imaging, and Part II addresses the plasma parameters of a high-voltage nanosecond discharge initiated by a runaway electron beam. Nowadays, the interaction of powerful energy ?uxes with various objects, namely plasma-induced processes, surface modi'cation for operational characteristics improvement, production of new materials and nanoparticles, thermonuclear synthesis and others, is studied in various ?elds of science and technology. As a rule, observing these processes in real time is a challenging problem because of the intense background radiation, the brightness temperature of which reaches thousands or even tens of thousands of degrees. The use of active optical systems with brightness ampli'ers allows one "to monitor" such processes. "Looking through the ?ame" becomes possible due to the use of high spectral brightness of metal vapor active media on self-terminating transitions. The medium serves as an ampli'er in a narrow spectral range, or a "nano'lter," which allows for the viewing of the processes blocked by the broadband background radiation. Metal vapor active media on self-terminating transitions with high pulse repetition frequencies (PRF) and modern high-speed video cameras have been used to design a laser monitor. Optical systems based on such an amplifier have been used for monitoring a number of objects and high speed processes, including the diagnostics of fast discharges. Pulse-periodic high-voltage nanosecond discharge in high-pressure gases initiated by runaway electrons in a non-uniform electric field is a promising method for generating the non-equilibrium low-temperature plasma. The main plasma parameters of the pulse and pulse-periodic high-voltage nanosecond discharges initiated by runaway electrons were determined with spectral methods. The results of investigations of colored jets that occur during the explosion of microinhomogeneities on the surface of electrodes and gas-dynamic processes that occur after nanosecond discharge initiated by runaway electrons in the pulse-periodic mode in atmospheric pressured air are presented.
Author: Gennadiy Sergeevich Evtushenko
Publisher:
ISBN: 9781536135695
Category : Science
Languages : en
Pages : 248
Get Book Here
Book Description
This book presents new instruments and methods for studying the dynamics of fast processes. The manuscript consists of two parts: Part I discusses the use of high speed metal vapor brightness amplifiers for object and process imaging, and Part II addresses the plasma parameters of a high-voltage nanosecond discharge initiated by a runaway electron beam. Nowadays, the interaction of powerful energy ?uxes with various objects, namely plasma-induced processes, surface modi'cation for operational characteristics improvement, production of new materials and nanoparticles, thermonuclear synthesis and others, is studied in various ?elds of science and technology. As a rule, observing these processes in real time is a challenging problem because of the intense background radiation, the brightness temperature of which reaches thousands or even tens of thousands of degrees. The use of active optical systems with brightness ampli'ers allows one "to monitor" such processes. "Looking through the ?ame" becomes possible due to the use of high spectral brightness of metal vapor active media on self-terminating transitions. The medium serves as an ampli'er in a narrow spectral range, or a "nano'lter," which allows for the viewing of the processes blocked by the broadband background radiation. Metal vapor active media on self-terminating transitions with high pulse repetition frequencies (PRF) and modern high-speed video cameras have been used to design a laser monitor. Optical systems based on such an amplifier have been used for monitoring a number of objects and high speed processes, including the diagnostics of fast discharges. Pulse-periodic high-voltage nanosecond discharge in high-pressure gases initiated by runaway electrons in a non-uniform electric field is a promising method for generating the non-equilibrium low-temperature plasma. The main plasma parameters of the pulse and pulse-periodic high-voltage nanosecond discharges initiated by runaway electrons were determined with spectral methods. The results of investigations of colored jets that occur during the explosion of microinhomogeneities on the surface of electrodes and gas-dynamic processes that occur after nanosecond discharge initiated by runaway electrons in the pulse-periodic mode in atmospheric pressured air are presented.
Author:
Publisher: STT Publishing
ISBN: 5936296342
Category : Science
Languages : en
Pages : 161
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Book Description
Digest contains the materials on the research and applications of pulsed lasers. Abstracts are interesting for researches and engineers in the field of quantum electronics, spectroscopy, plasma physics, medicine, remote sensing and laser technologies.
Author:
Publisher: STT Publishing
ISBN: 5936296709
Category : Science
Languages : en
Pages : 155
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Book Description
The book contains the materials on the fundamental and applied problems of pulsed lasers. May be interesting for researches and engineers working in the sphere of quantum electronics, spectroscopy, plasma physics, medicine, remote sensing and laser technologies.
Author: P. Buchhave
Publisher: Springer Science & Business Media
ISBN: 1489912711
Category : Science
Languages : en
Pages : 387
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Book Description
The origin of optical methods for fluid flow investigations appears to be nontraceable. This is no matter for surprise. After all seeing provides the most direct and common way for humans to learn about their environment. But at the same time some of the most sophisticated methods for doing measurements in fluids are also based on light and often laser light. A very large amount of material has been published in this area over the last two decades. Why then another publication? Well, the field is still in a state of rapid development. It is characterised by the use of results and methods developed within very different areas like optical physics, spectroscopy, communication systems, electronics and computer science, mechanical engineering, chemical engineering and, of course, fluid dynamics. We are not aware of a book containing both introductory and more advanced material that covers the same material as presented here. The book is the result of a compilation and expansion of material presented at a summer school on Optical Diagnosticsfor Flow Processes,held at RiS0 National Laboratory and the Technical University of Denmark in September 1993. The aim of the course was to provide a solid background for understanding, evaluating, and using modem optical diagnostic methods, addressing Ph. D. students and researchers active in areas of fluid flow research. The disciplines represented by the participants ranged from atmospheric fluid dynamics to biomedicine.
Author: Anton V. Klimkin
Publisher: STT Publishing
ISBN: 5936295974
Category :
Languages : en
Pages : 151
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Book Description
The book contains the materials on the fundamental and applied problems of pulsed lasers. May be interesting for researches and engineers working in the sphere of quantum electronics, spectroscopy, plasma physics, medicine, remote sensing and laser technologies.
Author: United States. Patent Office
Publisher:
ISBN:
Category : Patents
Languages : en
Pages : 1010
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 498
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Book Description
Author:
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 820
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Book Description
Author: Wolfgang Osten
Publisher: CRC Press
ISBN: 0429532652
Category : Technology & Engineering
Languages : en
Pages : 656
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Book Description
Where conventional testing and inspection techniques fail at the microscale, optical techniques provide a fast, robust, noninvasive, and relatively inexpensive alternative for investigating the properties and quality of microsystems. Speed, reliability, and cost are critical factors in the continued scale-up of microsystems technology across many industries, and optical techniques are in a unique position to satisfy modern commercial and industrial demands. Optical Inspection of Microsystems, Second Edition, extends and updates the first comprehensive survey of the most important optical measurement techniques to be successfully used for the inspection of microsystems. Under the guidance of accomplished researcher Wolfgang Osten, expert contributors from industrial and academic institutions around the world share their expertise and experience with techniques such as image processing, image correlation, light scattering, scanning probe microscopy, confocal microscopy, fringe projection, grid and moire techniques, interference microscopy, laser-Doppler vibrometry, digital holography, speckle metrology, spectroscopy, and sensor fusion technologies. They also examine modern approaches to data acquisition and processing, such as the determination of surface features and the estimation of uncertainty of measurement results. The book emphasizes the evaluation of various system properties and considers encapsulated components to increase quality and reliability. Numerous practical examples and illustrations of optical testing reinforce the concepts. Supplying effective tools for increased quality and reliability, this book Provides a comprehensive, up-to-date overview of optical techniques for the measurement and inspection of microsystems Discusses image correlation, displacement and strain measurement, electro-optic holography, and speckle metrology techniques Offers numerous practical examples and illustrations Includes calibration of optical measurement systems for the inspection of MEMS Presents the characterization of dynamics of MEMS
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309059917
Category : Technology & Engineering
Languages : en
Pages : 358
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Book Description
Optical science and engineering affect almost every aspect of our lives. Millions of miles of optical fiber carry voice and data signals around the world. Lasers are used in surgery of the retina, kidneys, and heart. New high-efficiency light sources promise dramatic reductions in electricity consumption. Night-vision equipment and satellite surveillance are changing how wars are fought. Industry uses optical methods in everything from the production of computer chips to the construction of tunnels. Harnessing Light surveys this multitude of applications, as well as the status of the optics industry and of research and education in optics, and identifies actions that could enhance the field's contributions to society and facilitate its continued technical development.
