Gaseous Dielectrics X by Yong-Ki Kim (auth.), Loucas G. Christophorou, James K.

By Yong-Ki Kim (auth.), Loucas G. Christophorou, James K. Olthoff, Panayota Vassiliou (eds.)

The publication includes a wide and extensive evaluation through major global specialists of the development and the issues of present curiosity in gaseous dielectrics and their use, in particular as insulators in high-voltage apparatus and substations. fresh advances in superconductivity for strength transmission and in plasma know-how also are included.

The basic, utilized and business study defined within the booklet permits the electrical energy to transmit and distribute electricity in additional effective, secure and environmentally appropriate ways.

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Further irradiation at that energy leaves the relative composition virtually unaffected but leads to a degradation of film, i. e. evaporation of material from the irradiated area. Upon irradiation with I eV electrons (Fig. 45 mC corresponding to an irradiation time of 19 hours) there is no further indication of the presence of CzF4Clz and no evidence of a significant degradation of the molecular film. 45 mC desorption peak is a nearly perfect image of the desorption resonance obtained from a pure Clz layer.

1.. ·. , U ... U U U troD U ... h10" '. eov'eV 1A _'eV ... 11,," \. e-C,F, o " o~ U+--r--r--r-"'T""'""'T""'""'T""'"--'-'--'--'--'--'-"--"'-'-' u u u u_ u _ u U_ U 'eV 1A U U H Figure 4. Electron attachment rate constants, Ie", as a function of mean electron energy for CF 3-cCt;Fu C2Fs-c-Ct;Fu, 1,2-(CF3h-c-Ct;FIO, 1,3-(CF3h-c-Ct;FIO, 1,4-(CF3h-c-Ct;FIO and 1,3,5-(CF 3)3-cCt;F9' 27 Acknowledgements I wish to thank the support of the UK funding agency EPSRC, and G. K. Jarvis and A. D. J. Critchley for their help in obtaining some of the data presented here.

In particular, SF6 is studied extensively because of its widespread use in the power and semiconductor plasma processing industries, despite its high global warming potential that has raised concerns on its release into the atmosphere. Thus, research is currently aimed at finding replacements or mixtures with other gases that would retain many of its outstanding characteristics while reducing its atmospheric impace. Negative ions play an important role in the development of discharges, via attachment, ion clustering, and detachment-induced breakddown.

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