Experimental setup

Figure 1: 8:21 am - $40 mAmps$ pulse, 200 ns, 300 Hz, $10^3 secs$ of beam, 6 fissions. 9:10 am - Threshold 80 mV, $N_{T1} = 17.6 counts/10 min$.

Figure 2: $\Delta T = 200 ns$, $I_e = 40 mA$, $f = 300 Hz$, $E_e = 20 MeV$, $q = 8.7 nC/pulse$. $N_{T1} = 12 counts/10 min$, $N_{T2} = 35 counts/10 min$

Figure 3: $\Delta T = 200 ns$, $I_e = 40 mA$, $f = 300 Hz$, $E_e = 20 MeV$, $q = 8.7 nC/pulse$. $N_{T2} = 46 counts/10 min$, threshold = 80 mV, $P_B = 33.9$