IEEE Conference Record - Abstracts. 2002 IEEE International Conference on Plasma Science (Cat. No.02CH37340)

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Characterization of a plasma source excited by an annular waveguide resonator
IEEE Conference Record - Abstracts. 2002 IEEE International Conference on Plasma Science (Cat. No.02CH37340) - - Trang 302
C.C. Motta, H.S. Maciel
Summary form only given, as follows. An experimental set-up for production of large volume discharge has been developed using the surface wave concept and is reported in this paper. A 1500W, 2.45GHz microwave power was obtained by a coherent association of two commercial water cooled magnetrons like those used in microwave ovens. An annular waveguide resonator with axial slots was built to operate...... hiện toàn bộ
#Plasma sources #Electromagnetic waveguides #Microwave ovens #Electrons #Plasma measurements #Plasma temperature #Plasma density #Plasma waves #Argon #Production
Hypervelocity plasma sprayer using railgun accelerators
IEEE Conference Record - Abstracts. 2002 IEEE International Conference on Plasma Science (Cat. No.02CH37340) - - Trang 117
M.D. Driga, R.C. Zowarka, R. Signorelli, M. Ozdemir
Summary form only given. This paper outlines the theory of hypervelocity plasma spraying with railgun systems and describes the laboratory system designed and built at the University of Texas at Austin, which successfully validated the method of hypervelocity plasma sprayer and conducted proof of principle experiments for hypervelocity plasma-powder deposition, using and railgun system.
#Thermal spraying #Plasma accelerators #Railguns #Acceleration #Plasma sources #Plasma materials processing #Plasma measurements #Plasma devices #Plasma properties #Plasma simulation
Current-scaling of radiated power for 40-mm diameter single wire arrays on Z
IEEE Conference Record - Abstracts. 2002 IEEE International Conference on Plasma Science (Cat. No.02CH37340) - - Trang 154
T.J. Nash, G.A. Chandler, R. Leeper, J.F. Seaman, J. McGurn, S. Lazier, J. Torres, D. Jobe, T. Gilliland, D. Nielsen, R. Hawn, J.E. Bailey, P. Lake, A.L. Carlson, H. Seamen, T. Moore, R. Smelser, J. Pyle, T. Waggoner, P.D. LePell, C. Deeney, M.R. Douglas, D. McDaniel, K. Struve, M. Mazarakis, W. Stygar
Summary form only given, as follows. In order to estimate the radiated power that can be expected from the next-generation z-pinch driver such as ZR at 28 MA, current-scaling experiments have been conducted on the 18-MA driver Z. We report on the current scaling of single 40-mm diameter tungsten 240-wire arrays with a fixed 110-ns implosion time. The wire diameter is decreased in proportion to the...... hiện toàn bộ
#Wire #X-ray imaging #Lakes #Zirconium #Tungsten #Voltage #Stability
Asymptotic analysis of stability transition in MHD models
IEEE Conference Record - Abstracts. 2002 IEEE International Conference on Plasma Science (Cat. No.02CH37340) - - Trang 231
M.A. Pinsky, V. Makhin
Summary form only given. Mathematical models of plasma instabilities, such as dense Z-pinches, are often described by systems of nonlinear PDEs with fast varying coefficients, which involve numerous uncertainties in equation parameters, boundary and initial conditions. Instabilities and high dimension of these models may amplify uncertainties and result in unpredictability of simulations, which mi...... hiện toàn bộ
#Stability analysis #Asymptotic stability #Magnetohydrodynamics #Uncertainty #Computational modeling #Predictive models #Bifurcation #Mathematical model #Plasma density #Plasma simulation
Quiet Monte Carlo method for the simulation of hydrodynamics, radiation, transport, and plasma
IEEE Conference Record - Abstracts. 2002 IEEE International Conference on Plasma Science (Cat. No.02CH37340) - - Trang 124
D. Winske, B.J. Albright, D.S. Lemons, W. Daughton
Summary form only given, as follows. A new particle simulation technique, called quiet direct simulation Monte Carlo (QDSMC), has been developed for the purpose of modeling complex systems accurately and with low-noise. The method has been applied successfully to diffusion, hydrodynamics, magnetohydrodynamics and radiation transport. Current research is devoted to the application of QDSMC to the m...... hiện toàn bộ
#Plasma simulation #Hydrodynamics #Plasma transport processes #Laboratories #Physics #Magnetohydrodynamics #Monte Carlo methods #Plasma applications #Gaussian distribution #Noise reduction
Destruction of bacteria using an atmospheric-pressure dielectric capillary electrode discharge plasma
IEEE Conference Record - Abstracts. 2002 IEEE International Conference on Plasma Science (Cat. No.02CH37340) - - Trang 253
K. Becker, N. Abramzon, N.S. Panikov, R. Crowe, P.J. Ricatto, C. Christodoulatos
Summary form only given. The interaction of plasmas with chemical and biological agents, in particular in the context of sterilization and decontamination has received much attention in recent years. Particular emphasis has been on the utilization of atmospheric-pressure plasmas as they do not require operation in costly vacuum enclosures and thus facilitate the convenient and low-cost treatment o...... hiện toàn bộ
#Microorganisms #Dielectrics #Electrodes #Atmospheric-pressure plasmas #Plasma measurements #Plasma applications #Plasma devices #Plasma chemistry #Plasma sources #Inductors
Dynamics of a charged particle in a linearly polarized traveling wave: applications to laser-matter interaction at very high intensities
IEEE Conference Record - Abstracts. 2002 IEEE International Conference on Plasma Science (Cat. No.02CH37340) - - Trang 208
A. Bourdier
Summary form only given. In order to understand laser-plasma interaction at intensities above 10/sup 18/ W/cm, the stability of the single particle motion in the fields of ultra-high-intensity laser waves has been studied. A 4-potential perturbation is considered to describe the influence of the plasma collective response and other waves, in order to discuss the validity of the adiabatic approxima...... hiện toàn bộ
#Polarization #Laser applications #Acceleration #Surface emitting lasers #Optical pulses #Plasma waves #Slabs #Plasma accelerators #Laser modes #Plasma simulation
3D PIC simulations of large-radius, annular E-beams in low-pressure air
IEEE Conference Record - Abstracts. 2002 IEEE International Conference on Plasma Science (Cat. No.02CH37340) - - Trang 325
J.W. Schumer, P.F. Ottinger, S.D. Strasburg, D.D. Hinshelwood
Summary form only given. High-current relativistic electron beams (e-beams) produced on the Saturn pulsed power accelerator at Sandia National Laboratories (SNL) can be used to generate high dose bremsstrahlung radiation. Typically, multiple concentric ring diodes on Saturn produce currents up to 10 MA at voltages of about 1.6 MV. To study the beam characteristics and transport efficiencies in gas...... hiện toàn bộ
#Saturn #Ionization #Particle beam injection #Plasma simulation #Electron beams #Electron accelerators #Laboratories #Power generation #Pulse generation #Diodes
Multichord laser interferometer for the magnetized target fusion program's field reverse configuration
IEEE Conference Record - Abstracts. 2002 IEEE International Conference on Plasma Science (Cat. No.02CH37340) - - Trang 270-270
E.L. Ruden, F.T. Analla
Summary form only given. AFRL's Directed Energy Directorate has built a multichord 0.633 pm laser interferometer to diagnose the magnetically confined plasma of a Field Reverse Configuration (FRC) being developed for LANL and AFRL's collaborative Magnetized Target Fusion (MTF) program. The FRC is intended for subsequent compression to near thermonuclear fusion conditions by AFRL`s Shiva Star capac...... hiện toàn bộ
#Laser fusion #Plasma measurements #Pulse measurements #Plasma displays #Current measurement #Optical interferometry #Voltage measurement #Charge measurement #Writing #Magnetic confinement
Structures of microwave tunnel kiln
IEEE Conference Record - Abstracts. 2002 IEEE International Conference on Plasma Science (Cat. No.02CH37340) - - Trang 295
M. Sato, T. Mutoh, T. Shimotsuma, S. Takayama, M. Mizuno, T. Hirai
Summary form only given. The electric field is uniform in the tunnel. The kiln has a blanket with double layer thermal insulation. Varying the thermal insulator can create the temperature gradient. The inner layer is made of mulite base cement. The loss tangent of it is the order of 10/sup -2/ which is equivalent to the work pieces. The microwave reflects on the metallic wall of the tunnel repeate...... hiện toàn bộ
#Kilns #Insulation #Temperature #Ceramics #Silicon compounds #Steel #Magnetic field measurement #Isolators #Fans #Microwave antenna arrays
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