Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
A New Electron Temperature Diagnostic Of Critical Surface Based On The Ion Acoustic Decay Instability In Hot High Density Plasma Relevant To Laser Fusion Semiannual Report April 1 September 29 1994
Download A New Electron Temperature Diagnostic Of Critical Surface Based On The Ion Acoustic Decay Instability In Hot High Density Plasma Relevant To Laser Fusion Semiannual Report April 1 September 29 1994 full books in PDF, epub, and Kindle. Read online A New Electron Temperature Diagnostic Of Critical Surface Based On The Ion Acoustic Decay Instability In Hot High Density Plasma Relevant To Laser Fusion Semiannual Report April 1 September 29 1994 ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis A New Electron Temperature Diagnostic of Critical Surface Based on the Ion Acoustic Decay Instability in Hot, High Density Plasma Relevant to Laser Fusion. Semiannual Report, April 1--September 29, 1994 by :
Download or read book A New Electron Temperature Diagnostic of Critical Surface Based on the Ion Acoustic Decay Instability in Hot, High Density Plasma Relevant to Laser Fusion. Semiannual Report, April 1--September 29, 1994 written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors made analysis of the IADI experiments previously made using OMEGA laser system. They obtained two important new results: the first direct observation of the epw excited by the Ion Acoustic Decay Instability, and the first study of the IADI in a plasma that approaches laser-fusion conditions, in the sense of having a density scale length of order 1 mm and an electron temperature, T[sub e], in excess of 1 keV. Previous observations of the epw's have been based on the second harmonic emission, from which little can be inferred because the emission is produced by unknown pairs of epw's, integrated in a complicated way over wavenumber space and real space. In contrast, they have directly observed the epw by using the 90[degree], collective Thomson scattering (CTS) of a UV laser (at the third harmonic of the pump) from the epw's. Because the ratio of probe frequency to electron plasma frequency is only about three, the scattering is collective (i.e. k[sub epw][lambda][sub De] is small, where k[sub epw] is the epw wave number and[lambda][sub De] is the Debye length), m even though the scattering angle is large. The electron temperature can then be deduced from the ion sound velocity, obtained from the measurement of the frequency at which growth is maximum at the scattering wavenumber.
Book Synopsis Development of Critical Surface Diagnostic Based on the Ion Acoustic Decay Instability in Laser Produced High Density Plasma by :
Download or read book Development of Critical Surface Diagnostic Based on the Ion Acoustic Decay Instability in Laser Produced High Density Plasma written by and published by . This book was released on 1994 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have developed a large angle, UV collective Thomson scattering (CTS) diagnostic for high density, hot plasma relevant to laser fusion. The CTS measured the basic parameters of the plasma waves (frequency, wave number), or the spectral density function for selected wave vectors of plasma waves, which were excited by the IADI (ion acoustic parametric decay instability). It is a good diagnostic tool for a local electron temperature measurement. The electron temperature was estimated by measuring either ion acoustic wave or electron plasma wave in the laser intensity window of 1
Book Synopsis A New Diagnostic Technique to Simultaneously Measure the Electron Temperature, Ionic Charge State, and Plasma Density Near the Critical Surface in Laser-plasma Interaction Experiments. Final Report by :
Download or read book A New Diagnostic Technique to Simultaneously Measure the Electron Temperature, Ionic Charge State, and Plasma Density Near the Critical Surface in Laser-plasma Interaction Experiments. Final Report written by and published by . This book was released on 1990 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have studied the dependence of the second harmonic signature of the ion acoustic decay instability on the target material in laser produced plasmas. Well-defined Stokes peaks were observed. The Stokes peaks were especially sharp for high Z targets. The threshold of the IADI was quite low even in high Z plasma. It increased only weakly with increasing the atomic number. On the other hand, the Stokes intensity decreased strongly with increasing atomic number. Linear theory, combined with the results of hydrodynamic-computer-simulation (LASNEX) calculation, explained our experimental results fairly well. The effective laser intensity is strongly reduced by the increased collisionaldamping of electron plasma wave in high Z plasma, so that the Stokes intensity was reduced strongly. Hence, strong electron heating due to the IADI is less likely in high Z plasma. On the other hand, in the context of the threshold, the collisional damping effect of the electron plasma wave is canceled due to the opposite trend of the damping of the ion acoustic wave which decreases with ZT{sub e}/T{sub i}. The low-threshold, and the sharp and steady spectrum make the IADI a good diagnostic of local plasma conditions near the critical surface for high Z plasma. The ionic charge state Z is estimated by measuring the ion acoustic wave frequency of the most unstable wave excited by the IADI. For Mo plasma, we had measured value of Z=30. We can also estimate the plasma density of the instability region using Bohm-Gross dispersion relation of the plasma wave. We have obtained plasma density N{sub e}/N{sub c} = 0.86. We have estimated plasma flow effects on the LADI by measuring the angular distribution of the IADI emission. Our results indicate that the flow effect is not important for the IADI in our experiments.
Book Synopsis A New Diagnostic Technique to Simultaneously Measure the Electron Temperature, Ionic Charge State, and Plasma Density Near the Critical Surface in Laser-plasma Interaction Experiments by :
Download or read book A New Diagnostic Technique to Simultaneously Measure the Electron Temperature, Ionic Charge State, and Plasma Density Near the Critical Surface in Laser-plasma Interaction Experiments written by and published by . This book was released on 1990 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have studied the dependence of the second harmonic signature of the ion acoustic decay instability on the target material in laser produced plasmas. Well-defined Stokes peaks were observed. The Stokes peaks were especially sharp for high Z targets. The threshold of the IADI was quite low even in high Z plasma. It increased only weakly with increasing the atomic number. On the other hand, the Stokes intensity decreased strongly with increasing atomic number. Linear theory, combined with the results of hydrodynamic-computer-simulation (LASNEX) calculation, explained our experimental results fairly well. The effective laser intensity is strongly reduced by the increased collisionaldamping of electron plasma wave in high Z plasma, so that the Stokes intensity was reduced strongly. Hence, strong electron heating due to the IADI is less likely in high Z plasma. On the other hand, in the context of the threshold, the collisional damping effect of the electron plasma wave is canceled due to the opposite trend of the damping of the ion acoustic wave which decreases with ZT{sub e}/T{sub i}. The low-threshold, and the sharp and steady spectrum make the IADI a good diagnostic of local plasma conditions near the critical surface for high Z plasma. The ionic charge state Z is estimated by measuring the ion acoustic wave frequency of the most unstable wave excited by the IADI. For Mo plasma, we had measured value of Z=30. We can also estimate the plasma density of the instability region using Bohm-Gross dispersion relation of the plasma wave. We have obtained plasma density N{sub e}/N{sub c} = 0.86. We have estimated plasma flow effects on the LADI by measuring the angular distribution of the IADI emission. Our results indicate that the flow effect is not important for the IADI in our experiments.
Book Synopsis Development of a New Plasma Diagnostic of the Critical Surface and Studies of the Ion Acoustic Decay Instability Using Collective Thomson Scattering. Final Report by :
Download or read book Development of a New Plasma Diagnostic of the Critical Surface and Studies of the Ion Acoustic Decay Instability Using Collective Thomson Scattering. Final Report written by and published by . This book was released on 1991 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have developed 5-channel collective Thomson scattering system to measure the ion acoustic wave excited by the ion acoustic wave decay instabilities. The multichannel collective Thomson scattering technique was established with 4[omega] probe laser beam using GDL laser system at LLE, Univ. of Rochester. We have obtained the ionic charge state Z by measuring the second harmonic emission from the ion acoustic decay instability. The LASNEX computer simulation calculations have been carried out. The experimental results agree very well with the LASNEX computer simulation results with the flux number f=0.1. In high power laser regime, the spectrum become broad, and the [alpha][gamma] decreases indicating that the turbulent like spectrum is observed. In order to understand the experimental results, we have developed a theory to study absorption of laser and heat transport. This new theory includes the temporal evolution of the heat conduction region. The results agree with flux-limited hydrodynamic simulations. 20 refs.
Book Synopsis Local Measurement of Electron Density and Temperature in High Temperature Laser Plasma Using the Ion-Acoustic Dispersion by : S. Ross
Download or read book Local Measurement of Electron Density and Temperature in High Temperature Laser Plasma Using the Ion-Acoustic Dispersion written by S. Ross and published by . This book was released on 2005 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dispersion of ion-acoustic fluctuations has been measured using a novel technique that employs multiple color Thomson-scattering diagnostics to measure the frequency spectrum for two separate thermal ion-acoustic fluctuations with significantly different wave vectors. The plasma fluctuations are shown to become dispersive with increasing electron temperature. We demonstrate that this technique allows a time resolved local measurement of electron density and temperature in inertial confinement fusion plasmas.
Download or read book Laser Program Annual Report written by and published by . This book was released on 1983 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Controlled Thermonuclear Reactions by : Samuel Glasstone
Download or read book Controlled Thermonuclear Reactions written by Samuel Glasstone and published by . This book was released on 2012-05-01 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Acoustic Emission by : Zinoviy Nazarchuk
Download or read book Acoustic Emission written by Zinoviy Nazarchuk and published by Springer. This book was released on 2017-01-23 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph analyses in detail the physical aspects of the elastic waves radiation during deformation or fracture of materials. It presents the methodological bases for the practical use of acoustic emission device, and describes the results of theoretical and experimental researches of evaluation of the crack growth resistance of materials, selection of the useful AE signals. The efficiency of this methodology is shown through the diagnostics of various-purpose industrial objects. The authors obtain results of experimental researches with the help of the new methods and facilities.
Download or read book Lasers and Masers written by and published by . This book was released on 1962 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Damage in Laser Materials by : Alexander J. Glass
Download or read book Damage in Laser Materials written by Alexander J. Glass and published by . This book was released on 1970 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modern Trends in Activation Analysis by : James R. DeVoe
Download or read book Modern Trends in Activation Analysis written by James R. DeVoe and published by . This book was released on 1969 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Induced Damage in Optical Materials, 1976 by : Alexander J. Glass
Download or read book Laser Induced Damage in Optical Materials, 1976 written by Alexander J. Glass and published by . This book was released on 1976 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recent Advances in Technology Research and Education by : Dumitru Luca
Download or read book Recent Advances in Technology Research and Education written by Dumitru Luca and published by Springer. This book was released on 2017-09-08 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents selected contributions to the 16th International Conference on Global Research and Education Inter-Academia 2017 hosted by Alexandru Ioan Cuza University of Iași, Romania from 25 to 28 September 2017. It is the third volume in the series, following the editions from 2015 and 2016. Fundamental and applied research in natural sciences have led to crucial developments in the ongoing 4th global industrial revolution, in the course of which information technology has become deeply embedded in industrial management, research and innovation – and just as deeply in education and everyday life. Materials science and nanotechnology, plasma and solid state physics, photonics, electrical and electronic engineering, robotics and metrology, signal processing, e-learning, intelligent and soft computing have long since been central research priorities for the Inter-Academia Community (I-AC) – a body comprising 14 universities and research institutes from Japan and Central/East-European countries that agreed, in 2002, to coordinate their research and education programs so as to better address today’s challenges. The book is intended for use in academic, government, and industrial R&D departments as a reference tool in research and technology education. The 42 peer-reviewed papers were written by more than 119 leading scientists from 14 countries, most of them affiliated to the I-AC.
Book Synopsis Inertial Confinement Fusion by : James J. Duderstadt
Download or read book Inertial Confinement Fusion written by James J. Duderstadt and published by John Wiley & Sons. This book was released on 1982 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Self-focusing: Past and Present by : Robert W. Boyd
Download or read book Self-focusing: Past and Present written by Robert W. Boyd and published by Springer Science & Business Media. This book was released on 2008-12-16 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: Self-focusing has been an area of active scientific investigation for nearly 50 years. This book presents a comprehensive treatment of this topic and reviews both theoretical and experimental investigations of self-focusing. This book should be of interest to scientists and engineers working with lasers and their applications. From a practical point of view, self-focusing effects impose a limit on the power that can be transmitted through a material medium. Self-focusing also can reduce the threshold for the occurrence of other nonlinear optical processes. Self-focusing often leads to damage in optical materials and is a limiting factor in the design of high-power laser systems. But it can be harnessed for the design of useful devices such as optical power limiters and switches. At a formal level, the equations for self-focusing are equivalent to those describing Bose-Einstein condensates and certain aspects of plasma physics and hydrodynamics. There is thus a unifying theme between nonlinear optics and these other disciplines. One of the goals of this book is to connect the extensive early literature on self-focusing, filament-ation, self-trapping, and collapse with more recent studies aimed at issues such as self-focusing of fs pulses, white light generation, and the generation of filaments in air with lengths of more than 10 km. It also describes some modern advances in self-focusing theory including the influence of beam nonparaxiality on self-focusing collapse. This book consists of 24 chapters. Among them are three reprinted key landmark articles published earlier. It also contains the first publication of the 1964 paper that describes the first laboratory observation of self-focusing phenomena with photographic evidence.
Book Synopsis Review of Radiologic Physics by : William Sensakovic
Download or read book Review of Radiologic Physics written by William Sensakovic and published by Lippincott Williams & Wilkins. This book was released on 2023-07-24 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offering a complete review for radiology residents and radiologic technologists preparing for certification, Review of Radiologic Physics, 5th Edition, by Dr. William F. Sensakovic, is a high-yield, efficient resource for today’s clinically focused exams. Now fully up to date, this edition covers x-ray production and interactions, projection and tomographic imaging, image quality, radiobiology, radiation protection, nuclear medicine, ultrasound, and magnetic resonance—all of the important physics information you need to understand the factors that improve or degrade image quality.
