# Testing the warm-up of the cathode; measure emission current vs time since If reached

# Pressure = 3.03e-7 mbar
# Vi = 0
# Vv = 17.38 V
# Va = 383 V
# Vf = -24 V
# Vd = 0.0 V
# If = 1.20 A

# Start at 9:17

# t (min)	Ie (uA)
0.0	76.6	# Very high initial spike and fall off, too fast for this time resolution
1.0	2.1	
1.5	2.4
2.0	2.7
2.5	3.1
3.0	3.5
3.5	4.0
4.0	4.5
4.5	5.1
5.0	5.7
5.5	6.3
6.0	7.0
6.5	7.6
7.0	8.2
7.5	8.8
8.0	9.5
8.5	10.2
9.0	10.9
9.5	11.6
10.0	12.2	
10.5	12.7
11.0	13.1 # Peak
11.5	13.1 # Peak
12.0	12.9
12.5	12.6
13.0	12.1
13.5	11.6
14.0	11.0
14.5	10.7
15.0	10.4
15.5	10.1
16.0	9.9
16.5	9.7
17.0	9.6
17.5	9.5
18.0	9.5
18.5	9.5
19.0	9.4
19.5	9.4
20.0	9.5

# Finish 9:37

# Notes: Possible decrease in current due to accumulation of charge on venault (Vv = +17.83 V)
# The emission current appears to depend upon the initial energy; yesterday observed higher emission currents (12-14 uA) with Vv = +17.83 but varying Vi
# Try decreasing venault and see if current increases

# Estimated error in time measurements of 1 or 2 seconds