1. When the collector electrode is connected to the amplifier, it is not difficult to show that the C to be used in Eq. (2) is the total capacity of the input circuit, i.e., counter, wiring, and grid.
2. The positive ion velocity if given by υ+ = K(E/P) where K/P is the mobility of the ions.
3. This time constant is frequently called the “clipping time” of the amplifier.
4. It will be explained in the section on amplifiers how a shorted delay line makes a more satisfactory differentiating circuit.
5. R. Sherr and R. Peterson, Rev. Sci. Inst. 18, 567 (1947).RSINAK0034-6748