The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Summary form only given. Several phenomena associated with nonlocal electron kinetics are found in high-frequency capacitive discharges through particle-in-cell/Monte Carlo simulations. From the spatial profile of the electron power deposition, the negative RF power deposition is analyzed for different excitation frequencies. The non-monotonic structure of RF electric field which comes from the abrupt...
Summary form only given. In this paper we investigated the effect of high temperature on the growth of copper film on the zinc substrate in different conditions of variation of magnetic field and changing the gases. Then we also discussed the possibility of sputtering thin films in the optimum conditions
Summary form only given. When a reduction of the waste and dissolution of the iron are carried out by using a high temperature medium, the radiant power emitted from the medium should be suppressed. On the contrary, it is useful for lighting and treatment of hazardous wastes because it has a highly intense radiant energy. In this paper, we tried to calculate the number density and radiant power density...
Summary form only given. There continues to be dramatic progress in applying pulsed-power driven wire arrays to research in Inertial Confinement Fusion (ICF). The Z facility at Sandia National Laboratories delivers -20 MA to a wire-array z pinch that supersonically implodes the wire-array plasma, and ultimately produces a 100-200 TW X-ray source at stagnation. Wire array X-ray sources appear to be...
Summary form only given. Relativistic electrons trapped in the radiation belts have a loss-cone velocity distribution. Loss-cone instability to amplify whistler waves by those electrons in the bulk of the energy distribution is studied. Doppler shifted cyclotron resonance interaction provides the energy transfer between electrons and the wave. The resonance condition is given by omega0 = Omega/gamma...
Summary form only given. A plasma display panel (PDP) is one of the best candidates for a large-scale flat panel display using plasma technology for high definition TV. The gas mixture ratio of PDP discharge plays a very important role in several issues in AC PDP researches such as lowering operating voltage for cost reduction, increasing voltage margin for stable operation, and enhancing brightness...
Summary form only given. Doped nanotube is a possible candidate of a nano diode for the nanoelectronic device. In order to dope the N or P type elements into a carbon nanotube (CNT), it is necessary to carry on the deformation of the tube such as opening the end of the tube or cutting the side of the tube. After filling the elements, those opening areas of the tube should be closed through the reconstruction...
Summary form only given. High-power, long-pulse or CW millimeter-wave sources are required for electron cyclotron heating (ECH) and current drive in magnetic fusion experiments. To further reduce system cost and improve reliability we have developed and built a prototype 110 GHz, with output power greater than 1 MW and a single-stage, depressed collector. In this paper, we report on the long-pulse...
Summary form only given. A very effective inductively coupled plasma (ICP) source free of capacitive coupling and transmission line effect is developed according to Godyak's concept. The discharge is driven via six toroidal ferromagnetic cores whose primary windings are connected to an RF power source operated at 400 kHz. The source operates in a wide range of the input RF power, thus, it is able...
Summary form only given. We have investigated the characteristics of VHF capacitively coupled plasmas produced in a modified applied materials chamber. The chamber had a 14-inch diameter upper electrode (source) that was driven at 10 to 160 MHz and a 300 mm diameter electrostatic chuck with a ceramic process kit that was driven at 13.56 MHz (bias). Diagnostics employed include RF diagnostics to measure...
Summary form only given. The development of conventional cavity gyrotrons at 140 GHz with 1-MW, CW output power at Forschungszentrum (FZK) Karlsruhe is mainly linked with the construction of the new superconducting stellarator W7-X at IPP Greifswald, Germany. For W7-X, 10 MW of electron cyclotron heating (ECRH) is planned and will be produced by ten gyrotrons each with a power of 1-MW. The gyrotrons...
Summary form only given. To realize continuous-wave (CW) operation of millimeter-wave gyrotrons at megawatt (MW)-power levels, these devices must operate at very high-order modes. To excite such an operating mode and to drive it into the regime of MW-level operation with high efficiency requires careful consideration of the startup scenario through which the operating parameters of the device are...
Summary form only given. Plasma assisted molecular beam epitaxy (PAMBE) of III/V-group nitrides is a potential alternative to metal-organic chemical vapor deposition (MOCVD) for fabrication of high quality wide band gap semiconductor devices. The main advantage of PAMBE over MOCVD is the use of solid gallium evaporated in a Knudsen cell in conjunction with a pure nitrogen plasma source to generate...
Summary form only given. Multi-frequency RF capacitive discharges are the current state-of-the-art technology in dielectric etch. Very high frequency (VHF) sources are used for controlling plasma density. Low frequency sources are used to control ion dynamics in the sheath in front of the processing wafer. These two frequency selections allow for nearly independent control of ion flux and ion energy...
Summary form only given. The impedance of a small spherical probe immersed in a uniform plasma is measured by recording the reflection coefficient of an applied signal using a network analyzer. This impedance has a resonance at the plasma frequency where the imaginary part goes to zero, a feature that has made this measurement a good way of determining electron density. When the sphere is biased negatively...
Summary form only given. Pulsed high voltage discharges generated directly in water initiate a variety of chemical and physical effects including the high electric field, intense ultraviolet radiation, overpressure shock waves, and, of particular importance, formation of various chemically active species (OH, H and O radicals, H2O2). These reactive species and physical conditions in turn have been...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.