Large-area direct current (DC) discharges were generated using planar microelectrode arrays (MEAs) with electrode distances between 50 and 250mm. A homogenous diffuse light emission with a typical thickness of approximately 0.5– 1.5mm was observed. The discharge can be operated over a wide pressure range with sustaining voltages of only a few 100V DC and showed the characteristics of a normal g...

An atomic emission spectrometer (AES) based on a novel atmospheric pressure liquid cathode glow discharge (LCGD) as one of the most promising miniaturized excitation sources has been developed, in which the glow discharge is produced between a needle-like Pt anode and the electrolyte (as cathode) overflowing from a quartz capillary. Lower energy consumption (<50 W) and higher excitation efficie...

We report the observation of arcing damage on diagnostic shutter during glow discharge wall conditioning in LHD. The system has no experience plasma produced by electron or ion cyclotron resonance heating neutral beam injection. arc trails were observed aluminum surface but not stainless steel although both materials exposed to with same duration. difference work functions between two may be a ...

An experimental diagnosis and kinetic modeling of the ionic chemistry in low pressure DC plasmas of H(2)/Ar has been carried out. The studies were performed at pressures of 2 Pa and 0.7 Pa, in a hollow-cathode discharge reactor, using as plasma precursor a H(2)/Ar mixture with 15% Ar content. Experimental measurements include distributions of ion fluxes to the cathode, as well as electronic tem...

Plasma polymerized pyromucic aldehyde (PPPA) thin films have been deposited on to glass substrates by glow discharge technique. Scanning electron microscopy (SEM) graphs reveal that the surface morphology of PPPA thin films is uniform and flawless. FTIR analysis reveals that the chemical composition of PPPA films is different from that of the pyromucic aldehyde (PA). From the UV-vis spectra dir...