We used helical antenna-coupled radio frequency (RF) plasmas to study the evolution of mode transition power and electron kinetics under different applied magnetic fields argon pressures. Langmuir probe emission spectrum data indicate that discharge changes from capacitive coupling E inductive H through a strong mixed (E + H). One reason for this strongly ionization is antenna structure, which ...

We report new data on the temperature coefficient of avalanche breakdown voltage (BV) in 4H-SiC devices. compare different device types (MOSFETs/Schottky diodes), measurement [Id(Vd)-sweeps and unclamped inductive switching stress], directions (vertical lateral) for a wide range voltages. fit measured BV(T)-curves to one-sided abrupt junction model extract values coefficients impact ionization ...

We discuss how data mining, patternbases and databases can be integrated into inductive databases, which make data mining an inductive query process. We propose a software architecture for such inductive databases, and extend this architecture to support the clustering of inductive databases and to make them suitable for data mining on the grid.

The feasibility of using a photoionized, low-ionization potential organic seed gas to initiate a high pressure plasma discharge is examined and compared to radio frequency breakdown of high pressure argon alone. The seed gas, tetrakis~dimethylamino!ethylene, which has an ionization potential of 6.1 eV is ionized by an ultraviolet laser through 6.4 eV photon absorption, and forms a plasma column...

Electronegative inductive discharges in higher pressure ranges typically exhibit strongly localized ionization near the coil structure, with decay of the electron temperature and ionization into the central discharge region. We use a two-dimensional (2D) fluid code with a chlorine feedstock gas to determine the spatial profiles of the particle densities and electron temperature in a cylindrical...

The front IR quadrupole absorbers (TAS) and the IR neutral particle absorbers (TAN) in the high luminosity insertions of the Large Hadron Collider (LHC) each absorb approximately 1.8 TeV of forward collision products on average per pp interaction (~235W at design luminosity 10cms). This secondary particle flux can be exploited to provide a useful storage ring operations tool for optimization of...

One of the most successful models of ionization is the photo-absorption ionization model . The model assumes that the process of interest is dominated by single-photon exchange which allows one to relate the ionization process to the photo-absorption process for which the data is more readily available. Also the model is restricted to non-relativistic recoil electron, thus it does not include h...