Physics Of High Density Z Pinch Plasmas

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Physics Of High Density Z Pinch Plasmas

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Author : Michael A. Liberman
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06

Physics Of High Density Z Pinch Plasmas written by Michael A. Liberman and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.

A "z pinch" is a deceptively simple plasma configuration in which a longitudinal current produces a magnetic field that confines the plasma. Z-pinch research is currently one of the fastest growing areas of plasma physics, with revived interest in z-pinch controlled fusion reactors along with investigations of new z-pinch applications, such as very high power x-ray sources, high-energy neutrons sources, and ultra-high magnetic fields generators. This book provides a comprehensive review of the physics of dense z pinches and includes many recent experimental results.

The Physics Of The High Density Z Pinch

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Author :
language : en
Publisher:
Release Date : 1988

The Physics Of The High Density Z Pinch written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with categories.

The fiber-initiated High-Density Z-Pinch (HDZP) is a novel concept in which fusion plasma could be produced by applying 2 MV along a thin filament of frozen deuterium, 20-30 .mu.m in diameter, 5-10 cm long. The megamp-range currents that result would ohmically heat the fiber to fusion temperatures in 100 ns while maintaining nearly constant radius. The plasma pressure would be held stably by the self-magnetic field for many radial sound transit times during the current-rise phase while, in the case of D-T, a significant fraction of the fiber undergoes thermonuclear fusion. This paper presents results of Los Alamos HDZP studies. Existing and new experiments are described. A succession of theoretical studies, including 1D self-similar and numerical studies of the hot plasma phase, 1D and 2D numerical studies of the cold startup phase, and 3D numerical studies of stability in the hot regime, are then presented. 9 refs., 4 figs.

Dense Z Pinches

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Author : Jack Davis
language : en
Publisher: American Institute of Physics
Release Date : 2002-12-13

Dense Z Pinches written by Jack Davis and has been published by American Institute of Physics this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002-12-13 with Science categories.

This conference was a topical meeting in the area of high energy density plasma physics as it relates to magnetically imploded/confined plasmas: Z-pinches. Scientists interested in plasmas for fusion and other applications at temperatures around a million degrees centigrade with strong magnetic fields and intense radiation fluxes will be interested in this conference. The physics of the plasmas discussed in this conference include magneto-hydrodynamics and instabilities, fusion mechanisms, radiation transport, mega-ampere pulsed power, atomic physics, spectroscopy and x-ray imaging. This proceeding provides a snapshot of the field internationally.

Dense Z Pinches

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Author : Bruce R. Kusse
language : en
Publisher: American Institute of Physics
Release Date : 2009-02-24

Dense Z Pinches written by Bruce R. Kusse and has been published by American Institute of Physics this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-02-24 with Science categories.

The scope of this 7th International Conference has continued to increase beyond the 1984 topic of Dense Z-Pinches to include the area of pulse power driven High Energy Density Plasma Physics. The subjects presented included; new wire array z-pinch geometries, gas puff experiments, plasma focus experiments, capillary and single channel discharges, astrophysics, advances in pulsed power drivers and new techniques for diagnosing high energy density plasmas.

Experiments In High Energy Density Plasmas Z Pinch And Ultra Intense Laser Interactions With Plasma

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Author : Aboubaker Ebrahim Dangor
language : en
Publisher:
Release Date : 2004

Experiments In High Energy Density Plasmas Z Pinch And Ultra Intense Laser Interactions With Plasma written by Aboubaker Ebrahim Dangor and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Plasma (Ionized physics) categories.

The Behavior Of A Plasma In A High Density Gas Embedded Z Pinch Configuration

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Author : Jack Sherman Shlachter
language : en
Publisher:
Release Date : 1982

The Behavior Of A Plasma In A High Density Gas Embedded Z Pinch Configuration written by Jack Sherman Shlachter and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Controlled fusion categories.

Dense Z Pinches

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Author : Jeremy Chittenden
language : en
Publisher: AIP Conference Proceedings / P
Release Date : 2006-01-06

Dense Z Pinches written by Jeremy Chittenden and has been published by AIP Conference Proceedings / P this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-01-06 with Science categories.

This proceedings volume summarizes the state-of-the-art in Z-pinch research pertaining to applications in inertial confinement fusion, x-ray radiation sources and high energy density plasma physics. Topics include: wire array Z-pinches, single wires and fibers, X-pinches, gas-puffs, plasma focus, capillary discharges and soft X-ray lasers, pulsed power drivers, diagnostic techniques and spectroscopy, as well as theoretical concepts.

Study Of The Internal Structure Instabilities And Magnetic Fields In The Dense Z Pinch

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Author :
language : en
Publisher:
Release Date : 2016

Study Of The Internal Structure Instabilities And Magnetic Fields In The Dense Z Pinch written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.

Z-pinches are sources of hot dense plasma which generates powerful x-ray bursts and can been applied to various areas of high-energy-density physics (HEDP). The 26-MA Z machine is at the forefront of many of these applications but important aspects of HEDP have been studied on generators at the 1 MA current level. Recent development of laser diagnostics and upgrade of the Leopard laser at Nevada Terawatt Facility (NTF) give new opportunities for the dense Z-pinch study. The goal of this project is the investigation of the internal structure of the stagnated Z pinch including sub-mm and micron-scale instabilities, plasma dynamics, magnetic fields, and hot spots formation and initiation. New plasma diagnostics will be developed for this project. A 3D structure and instabilities of the pinch will be compared with 3D MHD and spectroscopic modeling and theoretical analysis. The structure and dynamics of stagnated Z pinches has been studied with x-ray self-radiation diagnostics which derive a temperature map of the pinch with a spatial resolution of 70-150 æm. The regular laser diagnostics at 532 nm does not penetrate in the dense pinch due to strong absorption and refraction in trailing plasma. Recent experiments at NTF showed that shadowgraphy at the UV wavelength of 266 nm unfolds a fine structure of the stagnated Z-pinch with unprecedented detail. We propose to develop laser UV diagnostics for Z pinches with a spatial resolution 5 [mu]m to study the small-scale plasma structures, implement two-frame shadowgraphy/interferometry, and develop methods for investigation of strong magnetic fields. New diagnostics will help to understand better basic physical processes in Z pinches. A 3D internal structure of the pinch and characteristic instabilities will be studied in wire arrays with different configurations and compared with 3D MHD simulations and analytical models. Mechanisms of "enhanced heating" of Z-pinch plasma will be studied. Fast dynamics of stagnated plasma will be studied to estimate its contribution to the Doppler broadening of x-ray lines. Development of "necks" and "hot spots" will be studied with high-resolution UV diagnostics, an x-ray streak camera, and x-ray spectroscopy. Laser initiation of hot spots in Z pinches will be tested. A Faraday rotation diagnostic at 266 nm will be applied to 1-10 MG magnetic fields. For magnetic fields B20 MG, suggested in micropinches, Cotton-Mouton and cutoff diagnostics will be applied. A picosecond optical Kerr shutter will be tested to increase a sensitivity of UV methods for application at multi-MA Z pinches. The proposal is based on the experimental capability of NTF. The Zebra generator produces 1-1.7 MA Z-pinches with electron plasma density of 1020-1021cm-3, electron temperature of 0.5-1 keV, and magnetic fields>10 MG. The Leopard laser was upgraded to energy of 90-J at 0.8 ns. This regime will be used for laser initiation of hot spots. A further upgrade to energy of 250-J is suggested for laser-Z-pinch interaction. A picosecond regime will be used for optical gating. A 10-TW Tomcat laser at NTF is available for the high energy UV laser probing of the Z-pinch. Two graduate students will develop new optical and x-ray diagnostics, carry out experiments, and process experimental data. Other students will be involved in the design and fabrication of loads, supporting regular optical and x-ray diagnostics, and data processing. The new plasma diagnostics may be applied to HEDP experiments at NTF and other multi-MA generators. The feasibility of the research plan is based on the experience of the scientific team in Z-pinch plasma physics, laser physics, development of new plasma diagnostics, and the experimental capability of NTF. The experimental group of Dr. V.V. Ivanov (UNR) collaborates with a group for Z pinch MHD modeling of Dr. J.P. Chittenden (Imperial College, London), and theoretical group of Dr. D.D. Ryutov (LLNL). The suggested research ideas are supported by preli ...

Carbon Fibre Z Pinch

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Author : Daniel Klír
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2010-04

Carbon Fibre Z Pinch written by Daniel Klír and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-04 with categories.

Z-pinch belongs to one of the most fascinating plasma objects due to its simplicity, natural occurrence and variety of applications. This book focuses on a Z-pinch formed from a carbon fibre with a few micrometers in diameter. On the one hand, a large number of papers are devoted to studies of Z-pinches initiated from a high atomic number metal wire. On the other hand, no systematic effort has been made to study a Z-pinch initiated from a carbon fibre in vacuum using a simple capacitor bank. This work presents the description of carbon fibre Z-pinch dynamics and it shows that unique properties of carbon could provide valuable data not only for Z-pinch physics (breakdown physics, implosion of a low density plasma, carbon fiber ablation, dynamics of bright spots etc.) but also for life science and material science in which carbon is often used. Therefore, this resource might be helpful to those who are interested in physics and diagnostics of Z-pinch plasma and to those who want to know what happens when an electric current of 100 kiloamperes starts to flow through a few micrometer thick carbon fibre.

Zapp

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Author :
language : en
Publisher:
Release Date : 1983

Zapp written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with categories.

High-density and high-temperature plasmas have been produced in a z-pinch with a hollow gas puff. A number of interesting atomic-physics phenomena occur in these plasmas and some of these phenomena provide important diagnostic information for characterizing the plasmas. We have been interested in collisions of high-energy electrons with highly stripped ions in these plasmas. Such collisions may produce a population inversion which could result in stimulated emission in the x-ray regime.