Investigation of the Plasma Behaviour in the Dense Plasma Focus Using Laser Light Scattering Techniques PDF Download

Author: Richard Ernest Kirk
Publisher:
ISBN:
Category :
Languages : en
Pages : 610

View

Book Description

Author: George Randall Neil
Publisher:
ISBN:
Category : Dense plasma focus
Languages : en
Pages : 164

View

Book Description
This report describes investigations of the dense plasma focus designed to study turbulent processes. A CO2 laser collective scattering experiment with a high sensitivity was performed to measure the collective fluctuation spectrum. Scattering was observed from small, overdense regions and was correlated with micropinches seen in soft X-ray photographs. Bremsstrahlung was measured near the electron plasma frequency to determine a possible role for beam plasma instabilities. Only thermal bremsstrahlung levels were detected. (Author).

Author: Melvin Eisner
Publisher:
ISBN:
Category :
Languages : en
Pages : 7

View

Book Description
Time resolved scattering spectra have been observed from a dense plasma focus (DPF) illuminated by a pulse of laser light. Scattering was observable from 10 nanoseconds prior to arrival of the collapse on axis and for an additional 50 nanoseconds. The frequency spectrum is markedly asymmetric about the laser frequency, a feature which is inconsistent with spectral expectations based on thermal particle distributions even if particle drifts or waves excitations are included. A model is postulated which attributes the asymmetry to lateral displacement of scattering region from the axis of the focus. Analysis based on this model yields radial collapse velocity, density, and ion temperatures. Noteworthy features are the absence of radial bounce, indication of axial jetting and the formation of an axial wake. (Author).

Author: Charles John Koeber
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 43

View

Book Description
Measurement of plasma density and temperature was attempted using the technique of scattering laser light from the plasma and comparing the magnitudes of the scattered and input intensities. Although no significant results were obtained, a scattered signal was apparently obtained using a giant pulse laser. Both PIN photodiodes and photomultiplier tubes were used as detectors, and comparison showed the photomultipliers were more suitable. The most important results were modification of the laser to operate with a Pockels cell in a 'Q'-switched mode, improvement of the optical alignment system, and use of a light trap to eliminate internal reflected signals. (Author).

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

View

Book Description
Measurement of plasma density and temperature was attempted using the technique of scattering laser light from the plasma and comparing the magnitudes of the scattered and input intensities. Although no significant results were obtained, a scattered signal was apparently obtained using a giant pulse laser. Both PIN photodiodes and photomultiplier tubes were used as detectors, and comparison showed the photomultipliers were more suitable. The most important results were modification of the laser to operate with a Pockels cell in a 'Q'-switched mode, improvement of the optical alignment system, and use of a light trap to eliminate internal reflected signals. (Author).

Author: Heinrich Hora
Publisher: Springer Science & Business Media
ISBN: 3540889663
Category : Science
Languages : en
Pages : 455

View

Book Description
"New physics" is an appealing new keyword, not yet devalued by the ravages of inflation. But what has this to do with such an ugly field as plasma physics, steeped in classical physics, mostly outworn, with all its unsolved and ambiguous technological problems and its messy and open ended numerical studies? "New physics" is concerned with quarks, Higgs particles, grand unified theory, super strings, gravitational waves, and the profound basics of cosmology and black holes. It is the field of astonishing quantum effects, demonstrated by the von Klitzing effect and high temperature superconductors. But what can plasma physicists offer, after so many years of expensive and frustrating research to solve the problem of fusion energy? One may suggest that the fascinating research ofchaos with applications to plasma, or the achievements of statistical mechanics applied to plasmas, has something to offer and should be the subject of attention. However, this is not the aim of this book. Complementing the traditional aim of physics, which is to interpret the phenomena of nature by generalizing laws such that exact predictions about new properties and effects can be drawn, this book demonstrates how new physics has been derived over the last 30 years from the state of matter which exists at high temperatures (plasma).

Author: Smithsonian Science Information Exchange
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 692

View

Book Description
Presents animal sounds in many different languages.

Author: John Sheffield
Publisher: Academic Press
ISBN: 0080952038
Category : Science
Languages : en
Pages : 512

View

Book Description
This work presents one of the most powerful methods of plasma diagnosis in exquisite detail, to guide researchers in the theory and measurement techniques of light scattering in plasmas. Light scattering in plasmas is essential in the research and development of fusion energy, environmental solutions, and electronics.Referred to as the "Bible" by researchers, the work encompasses fusion and industrial applications essential in plasma research. It is the only comprehensive resource specific to the plasma scattering technique. It provides a wide-range of experimental examples and discussion of their principles with worked examples to assist researchers in applying the theory. - Computing techniques for solving basic equations helps researchers compare data to the actual experiment - New material on advances on the experimental side, such as the application of high density plasmas of inertial fusion - Worked out examples of the scattering technique for easier comprehension of theory

Author: Dino A. Jaroszynski
Publisher: Taylor & Francis
ISBN:
Category : Science
Languages : en
Pages : 336

View

Book Description
Presents diagnostic methods, experimental techniques, and simulation tools used to study and model laser-plasma interactions. This book discusses the basic theory of the interaction of intense electromagnetic radiation fields with matter.

Author: Sam Stuart
Publisher: Elsevier
ISBN: 1483155455
Category : Reference
Languages : en
Pages : 685

View

Book Description
Summary of International Energy Research and Development Activities 1974–1976 is a directory of energy research and development projects conducted in various countries such as Canada, Italy, Germany, France, Sweden, and the United Kingdom between 1974 and 1976. A limited number of projects sponsored by international organizations such as the International Atomic Energy Agency are also included. This directory consists of nine chapters and opens with a section on organic sources of energy such as coal, oil and gas, peat, hydrocarbons, and non-fossil organic sources. The next sections focus on thermonuclear energy and plasma physics; fission sources and energy production; geophysical energy sources; conversion technology; and environmental aspects of energy conversion and use. Energy transport, transmission, utilization, and conservation are also covered. The final chapter deals with energy systems and other energy-related research on subjects ranging from car sharing and urban passenger transport to nuclear power plants, energy supply and demand models, and high-power molecular lasers. This monograph will be a valuable resource of information for those involved in energy research and development.