IEEE Conference Record - Abstracts. 2002 IEEE International Conference on Plasma Science (Cat. No.02CH37340)
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Enhanced Raman scattering of a rippled laser beam in laser-plasma interaction
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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
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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
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
Electron density and electron temperature in argon microhollow cathode discharges
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Summary form only given, as follows. Direct current microhollow cathode discharges (MHCDs) operated in noble gases and in mixtures of rare gases and halides have been shown to emit excimer radiation with efficiency in the 0.5-10% range. Even higher values in efficiency have been obtained (20% in xenon) when the discharge was pulsed with 20 ns pulses. These relatively high values indicate a substan......
#Argon #Cathodes #Plasma temperature #Plasma measurements #Gases #Density measurement #Hydrogen #Electron emission #Xenon #Atomic measurements
Model for magnetically enhanced capacitively coupled plasma discharges
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Summary form only given. Magnetically enhanced capacitively coupled plasma (MECCP) discharges are widely used in the microelectronics industry for etching dielectric materials. MECCP etch reactors allow careful control of plasma chemistry, which is essential for developing selective etch processes.. In addition, plasma density is moderately high in MECCP reactors, thus ensuring that etch rates are......
#Couplings #Etching #Plasma chemistry #Inductors #Plasma density #Plasma applications #Plasma materials processing #Microelectronics #Plasma simulation #Computational modeling
Pulsed discharge characteristics of spherically convergent beam fusion
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Summary form only given, as follows. Previous studies of spherically convergent beam fusion (SCBF) indicate that it has a potential applicable to a portable neutron source. However, some problems remain for the practical uses. Although high neutron output needs a discharge with high voltage and current, it is difficult to get a power supply with sufficient capacity. Moreover, such a discharge lead......
#Pulsed power supplies #Voltage #Fault location #Neutrons #Cathodes #Steel #Anodes #Capacitors #Switches #Pulse measurements
Power enhancement from nested titanium wire arrays with foam targets on the Z accelerator
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Summary form only given, as follows. In the years since the 20 MA Z accelerator has come online, many experiments have been performed to study the radiation emitted from wire array Z-pinches. Several K-shell sources have been studied in recent years at Z, including aluminum, titanium, stainless steel, nickel, and copper. Observations from these experiments show that low wire number (interwire gaps......
#Titanium #Wire #Acceleration #Switches #Space vector pulse width modulation #Aluminum #Steel #Nickel #Copper #Plasma temperature
Atomic effects in the turbulent properties of microwave generated plasmas
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Summary form only given, as follows. Microwave plasmas are generated in helium, neon, argon, krypton, and xenon at various microwave powers and neutral gas pressures. A floating Langmuir double probe is employed to diagnose plasma electron density and temperature. Bias voltage and current characteristic curves are analyzed for the determination of electron temperature and density for all five gase......
#Plasma properties #Microwave generation #Plasma temperature #Plasma density #Plasma diagnostics #Gases #Electrons #Fluctuations #Power generation #Helium
Simulation of charged cooled trapped ions
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Summary form only given. Future aspects of science and technology in many fields such as physics, chemistry, material science, electronics, biology, medicine, etc. are characterized by miniaturization down to an atomic level. One promising method that offers such miniaturization is the ion beam manipulation technology. Over the years we have developed methods dealing with manipulation of ions in i......
#Biological system modeling #Medical simulation #Chemical technology #Materials science and technology #Atom optics #Biomedical optical imaging #Particle beam optics #Optical buffering #Temperature distribution #Electron traps
Cross-field diffusion in magnetized plasma due to parametric excitation of convective cells
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Summary form only given, as follows. Cross-field diffusion due to the convective cells in a magnetoactive uniform plasma has been of current interest in plasma physics. In present report the diffusion in turbulent plasma under conditions of parametric interaction of lower hybrid waves with short-wavelength (k/spl rho//sub /spl perp/i/>>1, k/sub z/=0) and long-wavelength (k/spl rho//sub /spl perp/i......
#Plasma waves #Plasma transport processes #Electrodes #Low pass filters #Physics #Electrostatic analysis #Algorithm design and analysis #Pumps #Fluctuations #Laboratories