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The "Average" Work Function and Emission Area in the Fowler-Nordheim Equation

  1. 1.
    0181499 - UFCH-W 20020237 RIV CZ eng J - Článek v odborném periodiku
    Plšek, Jan - Knor, Zlatko
    The "Average" Work Function and Emission Area in the Fowler-Nordheim Equation.
    Czechoslovak Journal of Physics. Roč. 52, č. 12 (2002), s. 1335-1348. ISSN 0011-4626
    Grant CEP: GA ČR GV202/98/K002; GA ČR GA202/02/0618
    Výzkumný záměr: CEZ:AV0Z4040901
    Klíčová slova: field emission * work function * emission area
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
    Impakt faktor: 0.311, rok: 2002

    Derivation of the elementary Fowler-Nordheim equation is based on several strong physical assumptions (e.g. smooth fiat surface and uniform work function across emitting surface, constant emission area and a uniform distribution of the applied field over it). A real emitter, however does not fulfill these assumptions. In spite of it the total emission current follows the FN equation and is frequently used for an estimation of the "average" work-function. The physical basis of this procedure and of terms "averageů work function and "emission area" are analyzed from the experimentalist''s point of view. Thus some of the older - more or less intuitive - conclusions are substantiated.
    Trvalý link: http://hdl.handle.net/11104/0001895

     
     

Počet záznamů: 1  

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