IEEE Conference Record - Abstracts. 2002 IEEE International Conference on Plasma Science (Cat. No.02CH37340)
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Quantum extension of Child-Langmuir law
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Summary form only given, as follows. In the advent fields of nano-technology,
electrode gaps with scales down to nanometer regime can be fabricated. On such a
nano scale, quantum effects such as electron tunneling and the electron
exclusion principle become important in the study of beam-gap interaction. We
extend the classical Child-Langmuir law into the quantum regime including the
effects of el...
#Electrodes #Electron beams #Tunneling #Voltage #Plasmas #Equations #Current density #Matter waves #Solid modeling #Geometry
Enhanced Raman scattering of a rippled laser beam in laser-plasma interaction
- Trang 115
Summary form only given, as follows. In the laser-plasma interaction
experiments, self-focusing and filamentation affect quite a large number of
other parametric processes including stimulated scattering processes. It has
also been experimentally observed that SRS is more prone to the nonlinearly
refraction-induced enhancement in the intensity of the filaments. This situation
is qualitatively well...
#Raman scattering #Laser beams #Laser excitation #Laser modes #Particle beams #Electron beams #Plasma waves #Magnetic fields #Optical coupling #Optical refraction
Sheet shaped plasma production using microwave-plasma interaction with ECR region
- Trang 320
Summary form only given. To control the shape of high density plasma has been
one of the issues for the application of plasma to industrial usages. Therefore,
ECR plasma is a good candidate of a high density plasma. A sheet shaped high
density plasma could be used to modify the surface of materials uniformly and as
the basis for electron accelerators. The discharge parameters, such as ECR
conditio...
#Production #Plasma density #Plasma accelerators #Plasma applications #Plasma materials processing #Plasma waves #Plasma measurements #Shape control #Magnetic field measurement #Industrial control
Effect of material strength models on numerical prediction of instability growth solids
- Trang 197
Summary form only given, as follows. Considerable research has been devoted to
the subject of the instability phenomena that appear on material interfaces.
While instability phenomena in perfect fluids and gases are reasonably well
understood, the problem of characterizing these phenomena in real materials
possessing strength, viscosity, compressibility or phase transitions remains an
open questio...
#Solid modeling #Predictive models #Numerical models #Testing #Capacitive sensors #Temperature #Conducting materials #Numerical simulation #Gases #Viscosity
Research facility for biological/environmental applications of cold plasmas
- Trang 308
Summary form only given, as follows. We have built a research facility designed
to accommodate various investigations in the physics and applications of large
volume, non-thermal plasmas. This facility is capable of generating cold plasmas
ignited by DC, AC, and RF power sources. Electrode designs aimed at
experimenting with DBD-based, RBD-based, and bare parallel plate discharges are
built. The o...
#Plasma applications #Plasma sources #Plasma measurements #Atmospheric-pressure plasmas #Mass spectroscopy #Physics #AC generators #DC generators #Power generation #Plasma diagnostics
Top/bottom asymmetry measured in axial radiation exiting dynamic-hohlraum X-ray source on Z
- Trang 104
Summary form only given, as follows. A radiation source has been developed on
the 20-MA Z facility that produces a high-power x-ray pulse, generated in the
positive z direction primarily from the interior of a collapsing dynamic
hohlraum The hohlraum is created from a solid cylindrical CH/sub 2/ target
centered within an imploding tungsten wire-array z-pinch. This pulse, which
exits a 4.5 mm/sup 2...
#Laboratories #X-ray lasers #Plasma measurements #Contracts #Pulse shaping methods #Physics #Plasma temperature #Laser modes #Laser theory #X-ray imaging
LASNEX simulations of ETA-II and laser target experiments
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Summary form only given, as follows. In order to have confidence in the
radiation converter target design for DARHT-II using LASNEX and our equation of
state (EOS) for Ta, we need to compare the LASNEX simulations with experimental
results from ETA-II and laser target experiments. ETA-II experiments include the
following measurements: integrated line density, plasma expansion velocity,
temperature...
#Plasma measurements #Plasma temperature #Plasma density #Plasma simulation #Optical design #Equations #Earth Observing System #Density measurement #Velocity measurement #Thermal expansion
Investigation on X-ray redistribution in cylindrical cavity
- Trang 161
Summary form only given. Radiation energy transport and X-ray redistribution
inside a high-Z hohlraum is a key in indirect-drive inertial confinement fusion.
Experiments on x-ray redistribution along axis of gold cylindrical cavities have
been performed on Xinguang-II laser facility. A time-resolved two-chroma X-ray
imager has been set up, with time resolution of 12.6 ps and spatial resolution
of ...
#X-ray imaging #X-ray lasers #Spatial resolution #Inertial confinement #Gold #Laser fusion #Energy resolution #Image resolution #Plasma temperature #Delay effects
High speed camera imaging and other diagnostics of dielectric barrier discharges at atmospheric pressure
- Trang 286
Summary form only given, as follows. Synchronous, High Speed Photography (HSP,
using a Princeton Instruments PI-MAX 512RB Digital ICCD Camera System) and
real-time dual detection (optical-electrical) diagnostics have been carried out
for the study of dielectric barrier discharges (DBD) in flowing gases such as
He, Ne, Ar, Kr, air and N/sub 2/. A phase-resolved synchronizing circuit was
used to tri...
#Dielectrics #Gases #Electrodes #Optical imaging #Photography #Instruments #Digital cameras #Real time systems #Optical detectors
Modeling of rod-pinch-diode performance at 2 to 4 MV
- Trang 248
Summary form only given. The rod-pinch diode has been scaled up successfully to
2 to 4 MV in experiments on the ASTERIX generator. Well-behaved impedance is
achieved for anode-cathode (A-K) gaps /spl ges/ 3.75 mm at 2.7-MV peak voltage
and /spl ges/ 6.5 mm at 4-MV peak voltage. Shots with smaller A-K gaps exhibit
rapidly decreasing impedance. The electrical behavior of the diode is analyzed
with t...
#Diodes #Plasma measurements #Impedance #Current measurement #Critical current #Anodes #Shape measurement #Voltage measurement #Cathodes #Plasma waves