Glow reaction

THE GLOW REACTION IN THE CARBON MONOXIDE-OXYGEN SYSTEM AND ITS RELATION TO THE EXPLOSION REGION OSCILLATORY BEHAVIOUR... 

Figure 9. The intensity-time profile of the air glow reaction NO -1- O -1- M during the decay of the O atoms and the stepwise increase of the total pressure, M = O2, from 0.1 to 0.8 mTorr (upper part) and from 0.1 to 24.5 mTorr (lower part).

A. High ionization degree. The CO2 dissociation process including the after-glow reaction in this regime is completed before the thermal explosion ... 

Poll Fl-U, Arzt M and Wickleder K-FI 1976 Reaction kinetics in the polymerization of thin films on the electrodes of a glow-discharge gap Eur. Polym. J 12 505-12... 

Solutions of these fire retardant formulations are impregnated into wood under fliU cell pressure treatment to obtain dry chemical retentions of 65 to 95 kg/m this type of treatment greatly reduces flame-spread and afterglow. These effects are the result of changed thermal decomposition reactions that favor production of carbon dioxide and water (vapor) as opposed to more flammable components (55). Char oxidation (glowing or smoldering) is also inhibited. 

Vapor—vapor reactions (14,16,17) are responsible for the majority of ceramic powders produced by vapor-phase synthesis. This process iavolves heating two or more vapor species which react to form the desired product powder. Reactant gases can be heated ia a resistance furnace, ia a glow discharge plasma at reduced pressure, or by a laser beam. Titania [13463-67-7] Ti02, siUca, siUcon carbide, and siUcon nitride, Si N, are among some of the technologically important ceramic powders produced by vapor—vapor reactions. 

The NO thus formed reacts more slowly with any excess of O atoms to reform NO2 and this reaction emits a yellow-green glow. 

The order Diptera (flies) contains the glow-worms Arachnocampa and Orfelia. The bioluminescence systems of dipterans do not utilize firefly luciferin in their light-emitting reactions, differing from the bioluminescence systems of coleopterans. In dipterans, it is extremely intriguing that the bioluminescence system of Arachnocampa appears different from that of Orfelia-. the former luminescence is activated by ATP, whereas the latter luminescence is stimulated by DTT but not by ATP. 

The New Zealand freshwater limpet Latia neritoides (Fig. 6.1.1) is the only known example of a freshwater luminous organism, with two possible exceptions certain species of luminous bacteria and the larvae of certain species of fireflies. The limpet inhabits shallow clear streams in the North Island of New Zealand, clinging to stones and rocks. Latia has a small oval-shaped shell (6-8 mm long), and secretes a luminous mucus that emits a greenish glow around the body only when disturbed the limpet does not show a spontaneous luminescence. The luminescence of Latia was first reported by Suter (1890) and further details including a positive luciferin-luciferase reaction were described by Bowden (1950). Both the luciferin and the luciferase have... 

Mass spectrometric studies of the ionic species which arrive at the cathode of both glow and corona discharges yield useful information regarding ion-molecule reactions which occur within these systems. Glow discharges have been used to study endothermic reactions, and their usefulness and limitations have been demonstrated by studies of the dissociative charge transfer reactions Ar+ + N2 N+ + N + Ar N2+ + N2 N+ + N + N2 N2+ + 02 0+ + O + N2. Exo-... 

Several types of continuous discharges are easily available in the laboratory. These are radio frequency, Townsend, coronas, glows (normal and abnormal), and arcs. Each system possesses special characteristics which in effect govern the motion of charged particles between the electrodes, and apart from a few special cases the systems are too complex to lend themselves to simple analytical description for studying ion-molecule reactions. Here, two of the latter systems—namely, coronas and glows—will be treated in detail in order to demonstrate their feasibility for studying both exothermic and endothermic reactions. 

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