Electrodeless glow discharge

Table 7.17 Infrared Absorption Characteristics of Electrodeless Glow Discharge Polymers... 

Yasuda, H. A study of electrodeless glow discharge as a means of modifying the surface of polymers Annual Reports No. NIH-NOl-HV-3-2913-1 through NIH-NOl-HV-3-2913-7 (1972-1979)... 

Thompson and Mayhan [190] and Liepins and Sakaoku [191]. Polymerization in an electrodeless glow discharge is discussed in Yasuda and Lamaze [192], and the effect of electric field voltage between two metal plates on the polymerization of vinyl chloride is discussed in Volkov et aL [193]. 

Yasuda H, Lamaze CE, Sakaoku K. Effect of electrodeless glow discharge on polymers. J. Appl. Polym. Sci. 1973 17 137-152... 

Whatever the analytical method and the determinand may be, the greatest care should be devoted to the proper selection and use of internal standards, careful preparation of blanks and adequate calibration to avoid serious mistakes. Today the Antarctic investigator has access to a multitude of analytical techniques, the scope, detection power and robustness of which were simply unthinkable only two decades ago. For chemical elements they encompass Atomic Absorption Spectrometry (AAS) [with Flame (F) and Electrothermal Atomization (ETA) and Hydride or Cold Vapor (HG or CV) generation]. Atomic Emission Spectrometry (AES) [with Inductively Coupled Plasma (ICP), Spark (S), Flame (F) and Glow Discharge/Hollow Cathode (HC/GD) emission sources], Atomic Fluorescence Spectrometry (AFS) [with HC/GD, Electrodeless Discharge (ED) and Laser Excitation (LE) sources and with the possibility of resorting to the important Isotope... 

Also low pressure ICPs and MIPs, often used as ion sources (see e.g. Creed et al. [606]) are very similar in their performance to glow discharges, except for them being electrodeless discharges. They have shown particular merits for element-specific detection in chromatography, where detection limits down to the pg/s level... 

In addition, the use of electrodless glow discharge will produce different results than those with internal electrodes. In the former case, rare gases such as He, Ar was introduced from one end of the tubular reactor and the plasma was sustained by a rf coil outside the reactor. Gaseous monomer was fed into the afterglow of a rare gas and polymer film deposited on the substrate placed downstream. Yasuda, et. al. (18) observed that the deposition rate in electrodeless discharge was independent of the power input and increased in proportional to the square of the monomer pressure. 

Christy s theory of polymerization by electron bombardment contains an important idea which can be applied to the theory of direct glow discharge polymerization (3). Williams and Hayes emphasized the importance of monomer adsorption to the electrode in the direct method (4). Poll also described the process of film formation in the direct method (. Yasuda et al. employed the indirect method, using an electrodeless discharge, and the results... 

Electrodeless discharge lamps (EDLs) are also available commercially. As the name implies, these emission sources provide a glow discharge by virtue of the fact that a sealed bulb, containing a monatomic gas at low pressure, and... 

In atomic fluorescence spectrometry (AFS), the analyte is introduced into an atomizer (flame, plasma, glow discharge, furnace) and excited by monochromatic radiation emitted by a primary source. The latter can be a continuous source (xenon lamp) or a line source (hollow cathode lamp, electrodeless discharge lamp, or tuned laser). Subsequently, the fluorescence radiation, which may be of the same wavelength (resonance fluorescence) or of longer wavelength (nonresonance fluorescence), is measured. 

EDL electrodeless discharge lamp GDL glow discharge lamp... 

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