Download or read book Particle Field Holography written by Chandra S. Vikram and published by Cambridge University Press. This book was released on 1992-07-23 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book to provide a thorough and systematic description of the entire subject of particle field holography. The use of holography to study very small objects in a dynamic volume is a technique of importance for scientists and engineers across a variety of disciplines for obtaining information about the size, shape and velocity of small objects, such as dust particles, fuel droplets, raindrops, pollen, and bubbles. Professor Vikram has made major contributions to the field, and here provides a coherent, comprehensive and self-contained treatment of the theory, practice and applications. The volume is written to satisfy the needs of researchers in the technique, practicing engineers dealing with applications, and advanced students in science or engineering departments. All the necessary mathematical formulations, figures and photographs, experimental procedures and results, and literature citations are therefore included.
Download or read book In line Particle Field Holography at Pegasus written by and published by . This book was released on 1995 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: An in-line holographic imaging system has been developed for hydrodynamic experiments at the Pegasus facility located at Los Alamos National Laboratory. Holography offers the unique capability to record distributions of particles over a three dimensional volume. The system to be discussed is used to measure particle distributions of ejecta emitted after a cylindrical aluminum liner (5.0 cm in diameter, 2.0 cm high) impacts a target (3.0 cm in diameter). The ejecta emerges from the target traveling up to 7mm/[mu]s and moves toward the axial center of the system where the holographic imaging is performed. In-line holography is particularly suited for the Pegasus pulsed power facility where the geometry restrictions make off axis holography impractical. In order to record the fast moving particles a frequency-doubled Nd:-YAG laser system has been implemented which produces a 80 ps 20 millijoule pulse at 532 nm. An optical relay system composed of a Fourier optical lens pair has been developed which is placed 4.0 cm from the center of the region of interest. This relay lens pair forms an intermediate image 32 cm from the object plane and the hologram is placed 4cm downstream of the intermediate image. The holographic system and resolution capability are discussed.
Download or read book The Acoustic Hologram and Particle Manipulation with Structured Acoustic Fields written by Melde, Kai and published by KIT Scientific Publishing. This book was released on 2020-01-10 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Particle Field Clustering and Dynamics Experiments with Holographic Imaging written by Jeremy Christopher De Jong and published by . This book was released on 2008 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: ?Pub Inc Collision and coagulation processes of inertial particles suspended in turbulence are of considerable significance in a wide variety of both natural and industrial flows. Due to the complex nature of these processes, they are typically studied through the use of direct numerical simulations (DNS). However, these exists a pressing need to experimentally validate the DNS results. In this regard, we utilize digital particle holography to study a dynamic particle field in a stationary, homogenous and isotropic turbulent flow and evaluate important collision parameters such as the radial distribution function (RDF) and the radial relative velocity probability density function (PDF). We compare the experimental results with those obtain by DNS under similar flow and particle conditions and define correction factors that must be applied to the DNS to account for limitations and uncertainties inherent in experimental measurements. These factors include correction for the limited experimental volume, a polydisperse particle size distribution, lower dimensional measurements and uncertainties in the measured particle locations. Additionally, we defined a particle signature function that enhances the ability to distinguish real particles from noise in numerically reconstructed digital holograms and developed a method the uses inertial range fitting of the second order velocity structure function determine the dissipation rate inside a stationary turbulence chamber that allows complete characterization of the flow.
Download or read book The Techniques of Holographic Particle Sizing written by Robert L. Kurtz and published by . This book was released on 1973 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Papers on Holographic Particle Diagnostics written by Chandra S. Vikram and published by . This book was released on 1990 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Holography Applications for the Zero g Atmospheric Cloud Physics Laboratory written by Robert L. Kurtz and published by . This book was released on 1974 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete description of holography is provided, both for the time-dependent case of moving scene holography and for the time-independent case of stationary holography. Further, a specific holographic arrangement is proposed for application to the detection of particle size distribution in an atmospheric simulation cloud chamber. In this chamber particle growth rate is investigated; therefore, the proposed holographic system must capture continuous particle motion in real time. Such a system is described.
Download or read book Development of Holographic Particle Field Data Reduction by Fourier Analysis written by J. D. Trolinger and published by . This book was released on 1984 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this work is to establish the feasibility of using a Fourier transform analysis to automatically extract size distribution from particle field off-axis holograms. Both experimental and theoretical studies were conducted to show that this technique is feasible. A holographic system was designed and built compatible for use with a commercially available Fourier transform analyzer and software. Holograms of a standard particle field were obtained, and scattered light of both the particle field and its hologram were Fourier transform analyzed. The Sauter mean diameter determined by the two methods agreed to within 5%. The experimental and theoretical studies show that the prediction of the size distribution could be improved by increasing the diffraction efficiency of the hologram. This can be accomplished by producing phase holograms. Spray holograms were also Fourier transform analyzed at various locations of the spray. Photographs of the spray are provided for comparison. The results of this phase show that this method will yield very fast analysis of large amounts of holographic data.
Download or read book In line Particle Holography Applied to Fluid Velocity Measurement written by Scott Jarrett Forbes and published by . This book was released on 1989 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Introduction to Holography written by Vincent Toal and published by CRC Press. This book was released on 2022-12-13 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt: This fully updated second edition of Introduction to Holography provides a theoretical background in optics and holography with a comprehensive survey of practical applications. It is intended for the non-specialist with an interest in using holographic methods in research and engineering. The text assumes some knowledge of electromagnetism, although this is not essential for an understanding of optics, which is covered in the first two chapters. A descriptive approach to the history and principles of holography is followed by a chapter on volume holography. Essential practical requirements for successful holographic recording are explained in detail. Recording materials are considered with detailed discussions of those in common use. Properties peculiar to holographically reconstructed images are emphasised as well as applications for which holography is particularly suitable. Mathematical tools are introduced as and when required throughout the text with important results derived in detail. In this new edition, topics such as photopolymers, dynamic holographic displays, holographic optical elements, sensors, and digital holography are covered in greater depth. New topics have been added, including UV and infrared holography, holographic authentication and encryption, as well as particle beam, X-ray, and acoustic holography. Numerical problems are provided at the end of each chapter. This book is suitable for undergraduate courses and will be an important resource for those teaching optics and holography. It provides scientists and engineers with knowledge of a wide range of holographic applications in research and industry, as well as an understanding of holography’s potential for future use.
Download or read book Holographic Techniques for the Study of Dynamic Particle Fields written by J. D. Trolinger and published by . This book was released on 1968 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: A brief review of the techniques of small-particle holography is presented. These results are extended in an elementary way to show that multiple-exposure holography can be used to study the dynamic properties of particle fields. Experimental techniques for performing such a study are then described. Finally, as a typical example, a multiple-exposure hologram of an aerosol is presented with a portion of the data extracted from it. The hologram exhibits a vast amount of information including the determination of the velocity field, density field, size distribution, flow structure, and diffusion rate. (Author).
Download or read book Examination of Automatic Data Reduction Methods for Particle Field Holograms written by Jim Trolinger and published by . This book was released on 1979 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Examination of Automatic Data Reduction Methods for Particle Field Holograms written by Jim Trolinger and published by . This book was released on 1979 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Holography and Magnetically Induced Phenomena in QCD written by Umut Gürsoy and published by Springer Nature. This book was released on 2021-08-12 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the traditional and novel techniques required to study the thermodynamic and transport properties of quark–gluon plasma. In particular, it reviews the construction of improved holographic models for QCD-like confining gauge theories and their applications in the physics of quark–gluon plasma. It also discusses the recent advances in the development of hydrodynamic techniques, especially those incorporating the effects of external magnetic fields on transport. The book is primarily intended for researchers and graduate students with a background in quantum field theory and particle physics but who may not be familiar with the theory of strong interactions and holographic and hydrodynamic techniques required to study said interactions.
Download or read book An Introduction to Acoustical Holography written by B. P. Hildebrand and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the first papers by E. N. Leith and J. Upatnieks on the subject of holography appeared in 1961, there has been a virtual explosion of research activity in the field. More than SOO papers and articles on holo graphy have appeared in the last ten years. Many applications of holo graphy have been proposed, and some of these are beginning to enter the realm of usefulness. One of the applications that appears to hold great promise is acoustic imaging by means of holography. The first papers on this subject appeared in 1966. but already research activity in the field is burgeoning. Tbree symposia whoUy devoted to acoustical holography have been held and tbe papers published in book form. The purpose of this book is to bring together the results of research in acoustical holography, some of it as yet unpublished, under one cover so that workers in holography, nondestructive testing, medical imaging, underwater imaging, and seismic exploration can decide whether this new technique can be useful to them.
Download or read book Digital Holography and Wavefront Sensing written by Ulf Schnars and published by Springer. This book was released on 2014-09-19 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: This highly practical and self-contained guidebook explains the principles and major applications of digital hologram recording and numerical reconstruction (Digital Holography). A special chapter is designated to digital holographic interferometry with applications in deformation and shape measurement and refractive index determination. Applications in imaging and microscopy are also described. Spcial techniques such as digital light-in-flight holography, holographic endoscopy, information encrypting, comparative holography, and related techniques of speckle metrology are also treated
Download or read book The Techniques of Holographic Particle Sizing written by Robert L. Kurtz and published by . This book was released on 1973 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Depending on the mechanism of particle production, the resultant particle size and velocity distribution may range over several orders of magnitude. In general, if particle size information is desired from a given type generator, one must resort to some form of experimental determination of the distribution. If the source of particle production is a dynamic one involving a reasonable volume, holography provides a tailor-made particle size and velocity distribution detector. This is evidenced by the fact that holography allows the entire volume to be recorded on one exposure without any interference with the volume of interest. Herein lies a very important characteristic of the holographic particle detection technique: It provides a holographic nondestructive testing technique in the fullest sense of the definition of nondestructive testing. This report provides a description of three different systems useful in this technique and includes the experimental results from one of the holographic systems which was used to detect particle size and velocity distribution from the Skylab waste tank.
