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
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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
Carbon nanotube cathode research at AFRL
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Summary form only given, as follows. Single-wall and multi-wall nanotubes have
shown some promise as field emission cathodes. Most applications have focused on
small surface areas with such uses as flat panel displays. The Air Force
Research Laboratory has begun to investigate the uses of these cathodes for
larger areas. Several types of nanotube cathodes have been investigated. Each
type is imple...
#Carbon nanotubes #Cathodes #Electrons #Microwave technology #Testing #Flat panel displays #Laboratories #Geometry #Carbon dioxide #Polymers
The corrosion properties of RF inductively coupled plasma nitrided stainless substrates
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Summary form only given. This paper presents the corrosion properties of RF
inductively coupled plasma nitrided stainless steel substrates. A home-made
low-frequency RF inductively coupled plasma source was used to perform the
nitriding process. The processing parameters were carefully selected after
considering the repeatability of the device. A nitrogen plasma operating in the
H-mode was used fo...
#Plasma properties #Corrosion #Radio frequency #Plasma sources #Plasma devices #Plasma materials processing #Testing #Steel #Nitrogen #X-ray scattering
Simulation of charged cooled trapped ions
- Trang 125
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
Particle-in-cell simulations of laser-produced hot spot
- Trang 114
Summary form only given, as follows. An electrostatic hybrid particle-in-cell
(PIC) code has been developed to model transport processes in a laser-produced
hot spot. It includes electron-electron and electron-ion collisions, inverse
bremsstrahlung heating in Langdon form, and a self-consistent ambipolar electric
field defined by the quasi-neutrality condition. Having the advantage of
averaging ov...
#Laser modes #Pump lasers #Plasma simulation #Plasma temperature #Electrostatics #Resistance heating #Frequency #Nonuniform electric fields #Particle beams #Acoustic beams
3D PIC simulations of large-radius, annular E-beams in low-pressure air
- Trang 325
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...
#Saturn #Ionization #Particle beam injection #Plasma simulation #Electron beams #Electron accelerators #Laboratories #Power generation #Pulse generation #Diodes
Current status towards the development of a submillimeter-wave reflex klystron
- Trang 171
Summary form only given. The reflex klystron is a promising candidate for use as
a source of submillimeter-wave power at the milliwatt level. Such sources are
required to fulfill the requirements for small-footprint, cost-effective and
efficient fundamental sources for medical imaging and remote sensing
applications at terahertz frequencies. Dimensional constraints associated with
traditional manu...
#Klystrons #Frequency #Submillimeter wave technology #Biomedical imaging #Remote sensing #Manufacturing #Electron sources #Impedance #Fabrication #Scattering parameters