A windowless flow proportional counter is used to detect 4.9 MeV alpha particles that are totally stopped in the fill gas. The tube has an anode radius of 0.0044 cm, a cathode radius of 4.2 cm, and is filled with P-10 gas at 1.3 atm. Using the data from Table 6.1, estimate the amplitude of the voltage pulses from the counter for an applied voltage of 2160 V and a collection capacitance of 420 pF.