ML plot for emitter X89 characterized by Dyke and Trolan (see Fig. 3 in Ref. 64). All lines except the continuous line drawn through the data points may be disregarded.
To illustrate the derivation of values for the constant in Eq. (1) using the slopes of FN and ML plots.
Results for the conversion factor , derived from analysis of a ML plot of slope 58.6 Np kV. A local work function of 4.50 eV is assumed. The value estimated from electron microscope observations is also shown.
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