The London, Edinburgh and Dublin philosophical magazine and journal of science . 3, 5, 6, 7, and 8, and fig. 2, curves 1, 3, 4,5, 6, 7, and 8, for magnesium, represent the current betweenthe inner net and outside cylinder, through a retarding fieldof about 0*7 to 1 volt, as a function of the accelerating fieldapplied between the hot wire and net. The total currentfrom the hot wire as a function of the accelerating field isrepresented by fig. 1, curves 1 and 4, and by fig. 2, curves 2,2 a, 9, 10, and 11. The analysis of these curves is given inTables I. and II. The partial current curves are ch
The London, Edinburgh and Dublin philosophical magazine and journal of science . 3, 5, 6, 7, and 8, and fig. 2, curves 1, 3, 4,5, 6, 7, and 8, for magnesium, represent the current betweenthe inner net and outside cylinder, through a retarding fieldof about 0*7 to 1 volt, as a function of the accelerating fieldapplied between the hot wire and net. The total currentfrom the hot wire as a function of the accelerating field isrepresented by fig. 1, curves 1 and 4, and by fig. 2, curves 2,2 a, 9, 10, and 11. The analysis of these curves is given inTables I. and II. The partial current curves are characterizedby successive maxima and minima due to inelastic collision ofresonance. We have chosen as before the points at whichsuch inelastic collisions begin to show an appreciable effect * Goucher, Phys. R. viii. p. 561 (1916). Resonance Potentials for Electrons in Metallic Vapours, 35 upon the current, rather than the position o£ maximum are determined by carefully plotting and extrapolatingthe lower portion o£ each curve. The point selected as Fig. 1. -s%/. 0 2 4 6 8 Acce/erstino Potential Volts 10 Variation with accelerating potential of current to outside cylinderand of total current from hot wire. Magnesium. * <z, b, c, &c, is the voltage at which the observed curvedeviates from the extrapolated curve by a small pre-assionedamount. The difference in the voltages corresponding to D2 * 36 Dr. Foote and Dr. Mohler on Ionization and Fig. 2.
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