Dense Z-Pinches: 5th International Conference on Dense Z-Pinches

by Davis, Jack; Deeney, C.; Pereira, Nino R.; Davis, Jack

• ISBN13: 9780735401082
• ISBN10: 073540108X
• Format: Hardcover
• Copyright: 2002-12-01
• Publisher: Amer Inst of Physics

Summary

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.

Table of Contents

Preface	p. xv
Letters from the Chairmen of Beams/DZP2002	p. xvii
Sponsors	p. xix
Organizing Committees	p. xx
Brief History of the Conferences	p. xxii
Statistics	p. xxiii
National Perspectives
Fast Z-Pinch Study in Russia and Related Problems	p. 3
History of Z-Pinch Research in the U.S.	p. 9
Southern Dense Pinch Discharges	p. 15
Multi-Mega-Ampere Z-Pinch Pulsed Power Drives
The ZR Refurbishment Project	p. 23
Pulse Power System Development for Megajoule X-Ray Facility BAIKAL	p. 29
Experiments Aimed at the "Baikal" Program	p. 33
Study of the Plasma Focus as a Driver for the Magnetic Compression of Liners	p. 37
Conceptual Design of Decade Half, a 15-MA, 300-ns PRS Driver	p. 43
New IES Scheme for Power Conditioning at Ultra-high Currents: From Concept to MHD Modeling and First Experiments	p. 47
ECF2: A Pulsed Power Generator Based on Magnetic Flux Compression for K-Shell Radiation Production	p. 51
Performance of Llampudken with Short Circuit and Plasma Loads	p. 55
Load Current Sharpening and Liner Implosions on a Capacitor Bank	p. 59
Wire Array Experiments
Effect of Discrete Wires on the Implosion Dynamics of Wire Array Z-Pinches	p. 65
Ablation Rate of Wire Cores in Wire Array Z-Pinch Experiments	p. 71
Implosion Dynamics and X-Ray Characteristics of Nested Wire Array Z-Pinches	p. 75
The Effect of Precursor Plasma Flow on Foam Targets in Wire Array Z-Pinch Experiments	p. 79
The Effect of Array Configuration on Current Distribution in a Wire Array Z-Pinch	p. 83
Prolonged Plasma Production and Dynamics of Implosion of Multiwire Arrays	p. 87
Experimental Study of Wire Array Implosion in Presence of Prolonged Plasma Production on Angara-5-1 Facility	p. 91
Wire Array Z-Pinch Experiment on Inductive Energy Storage Generator ASO-X	p. 95
Gas Puffs Experiments
Progress in Double-Shell Gas Puff Z-Pinches	p. 101
K-Shell Yield Performance Assessment of Argon Gas Puff Loads Imploded on Double-Eagle, Z, and Decade Quad	p. 105
Z-Pinch Experiments on Decade Quad Using a Double-Shell Gas Puff	p. 109
Gas Puff Radiation Performance as a Function of Radial Mass Distribution	p. 113
Double Gas Puff Z-Pinch with Axial Magnetic Field for K-Shell Radiation Production	p. 117
Effect of an Axial Magnetic Field on the K-Shell Radiation of a Neon Double Gas Puff	p. 123
Soft X-Ray Production and Spectrum Measurements in Imploded Krypton Liners	p. 127
Spatial Structure of X-Ray Emission of a Gas-Puff Z-Pinch Plasma	p. 131
Puff-Gas Z-Pinch Experiment on "Yang" Accelerator	p. 135
Z-Pinch, X-Pinch, Focus and Capillary Discharge Plasma Dynamics and Devices
The X Pinch as a Point Source for Point-Projection X-Ray Radiography	p. 141
X Ray Emission From X Pinch Experiments on the Llampudken Generator	p. 145
Regimes of Energy Input in the Pseudospark Discharge in the Sources of EUV Radiation	p. 149
Optical Observation of a Pseudospark Discharge Development in a Source of EUV Radiation	p. 153
Experimental Setup for Investigation of the Pseudospark Discharge as Applied to Generation of EUV Radiation	p. 157
Fast Capillary Discharge Experiments in a Small Device; Spectra in the VUV Region	p. 161
Soft X-Ray Radiation of Fast-Capillary-Disharge CAPEX 2	p. 165
Plasma Dynamics and Lasing Condition of Fast Capillary Discharges	p. 169
X-Ray Spectroscopic Studies of X-Pinch Plasma Micropinches with [Similar] 10 ps Resolution	p. 173
Spectroscopic Analysis of 1MA X-Pinch Implosions at the Nevada Terawatt Facility	p. 177
X-Ray Wide-Band and Time-Resolved Imaging and Spectroscopic Characterization of Hot Spots and Jets in 0.9-1.0 MA X-Pinches	p. 181
Analysis of Anisotropy of Spectra and Spatial Distribution of Hard X-Ray Emission from 0.9-1.0 MA High-Z X-Pinches	p. 185
Analysis of Time Evolution of Z-Pinch Lines Using an Advanced 5-Channel Spectrometer Polychromator	p. 189
Emission Produced at Compression of Deuterium Current-Sheath with Wire in Plasma Focus Discharge	p. 193
Energy Transformation in Z-Pinch and Plasma Focus Discharges with Wire and Wire-in-Liner Loads	p. 197
Multi-Wire Z Pinch Experiments	p. 201
Plasma Formation Around Single Wires	p. 205
Investigation of the Initial Stage of Electrical Explosion of Fine Metal Wires	p. 209
Joule Energy Deposition in Exploding Wire Experiments	p. 213
Results of Experiment on Explosion of W and Al Wires in Water and Vacuum	p. 217
Wire Explosion with 0-1kA Per Wire	p. 221
Layering of an Annular Z-Pinch Sheath in the Presence of an Axial Magnetic Field	p. 225
Dense Transient Plasmas Driven by a Mega-Ampere Device in the Chilean Nuclear Energy Commission	p. 229
Laser Initiated Hollow Gas-Embedded Z-Pinch	p. 233
Discharge Formation in Fast Pulsed Capillary Discharges	p. 237
Experimental Observation in a High Current Capillary Discharge	p. 241
Properties of Hot-Spots in Plasma Focus Discharges Operating in Hydrogen-Gas Mixtures	p. 245
Energy Dissipation in the Run-Down Phase of Plasma Focus Discharge	p. 249
Fusion, Neutron Production and Other Applications
X-Ray and Neutron Emission from PF-1000 Facility	p. 255
Neutron Emission Characteristics of a High-Current Plasma Focus: Initial Studies	p. 261
A Very Small Plasma Focus Operating at Tens of Joules	p. 265
Characteristics and Dynamics of a 215-eV Dynamic-Hohlraum X-Ray Source on Z	p. 269
Direct Drive Inertial Confinement Fusion in a Z-Pinch Plasma	p. 275
The Inverse Z-Pinch as a Physics Test Bed, and a Possible Target Plasma for Magnetized Target Fusion (MTF)	p. 279
Ignition of Fusion Burn Wave by Nonthermal Plasma of Z-Pinch	p. 283
On Perspectives of Creation of High-Power Neutron Source at Deuterium Plasma Compression in Z-[Theta] Pinch Geometry	p. 287
The Production of Hypersonic, Radiatively Cooled Plasma Projectiles of Extremely High Energy Density in Imploding Z-Pinches	p. 291
Fusion Criteria for Dense Cylindrical and Sheet Z-Pinches	p. 295
Considerations for Generating up to 10 Mbar Magnetic Drive Pressures with the Refurbished Z-Machine (ZR)	p. 299
3-D Modeling of Modifications to the Z Accelerator for Generating Shaped Pulses	p. 305
The RT Instability in Cylindrical Implosion of a Jelly Ring	p. 309
Phase Transitions in Metal under Fast Selfheating by High-Power Current Pulse	p. 313
Experiments with Radiatively Cooled Supersonic Plasma Jets Generated in Conical Wire Array Z-Pinches	p. 317
Deflection of Supersonic Plasma Jets by Ionised Hydrocarbon Targets	p. 321
Plastic Deformation and Perforation of Metal Using Metallic Jet	p. 325
Anomalous Resistivity Change in NiFe[subscript 2]O[subscript 4] Nanosized Powders Synthesized by Pulsed Wire Discharge	p. 329
Reduction of Micrometer Size Al Particles in Nanosize AIN Powder Synthesized by Pulsed Wire Discharge	p. 333
Theory and Modeling
Pitfalls in Radiation Modeling of Z-Pinch Plasmas	p. 339
Why do Wire-Array Z-Pinches Give Such a Sharp and Efficient X-Ray Pulse?	p. 345
Calculated Evolution of Side-On and End-On X-Ray Images of Wire and Gas Puff Implosions on Z	p. 350
How 3D Effects Limit X-Ray Power in Wire Array Z-Pinches	p. 354
Modeling Enhanced Energy Coupling of Z-Pinches to Pulsed-Power Generators	p. 358
Numerical Studies of Neon Gas-Puff Z-Pinch Dynamic Process	p. 364
Computational Assessment of the Effect of Nozzle Geometry on the Performance of Gas-Puff Plasma Radiation Sources	p. 368
Computational MHD on Lagrangian Grids	p. 372
Three Dimensional Resistive Wire Array Implosion Simulations Continued from Two Dimensional R-[Theta] Initiation Simulations	p. 376
Recent Improvements to MACH2 and MACH3 for Fast Z-Pinch Modeling	p. 380
Simulation of Electric Explosion of Metal Wires	p. 384
Improved Neon L-Shell Physics in MHD Modeling of Hawk Gas-Puff Z-Pinch Implosions	p. 388
Cooperative Relaxation Methods for Multigroup Radiation Diffusion in Radiation Hydrodynamics	p. 392
Hybrid Simulations of Current-Carrying Instabilities in Z-Pinch Plasmas with Sheared Axial Flow	p. 396
A Comparison of Radiation Transport Models for a Ti Z Pinch	p. 400
Z-Scaled K-Shell Dielectronic Recombination Rate Coefficients	p. 404
A Kinetic Description of Ions in Aluminium Wire-Array Precursor Plasma	p. 408
Theoretical Development of M-Shell Spectroscopy for Z-Pinch Plasma Diagnostics	p. 412
Modeling of Capillary Discharge Plasma for X-Ray Lasers, XUV Lithography and Other Applications	p. 416
The Z-Pinch Structure Generation by the Evolution of the Nonquasineutral Electron Vortex	p. 420
On Stabilization of the Rayleigh-Taylor Instability for the Imploding Liner on Account of Ion-Ion Collisions	p. 424
The Tentative Opinion of Modeling Plasma Formation in Metallic Wire Z-Pinch	p. 428
Appendices
Group Photo	p. 435
Conference Photographs	p. 437
List of Participants	p. 445
Author Index	p. 455
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